How many miles on your MM and what Oil Change Frequency

[HBTMD]

Time to find out who has the highest mileage on their MM and what sort of oil & filter change frequency you use.

I will start first. Only 38,000 miles. Mobil 1 oil and Mobil 1 Filter every 3,000 to 4,000 miles.

Engine and transmission still run perfect. :beer:

I have replaced both front window motors out of warranty, however.

[RF Overlord]

Changing M1 oil at 3,000 miles is a HUGE waste that buys you nothing. Either go back to conventional or run it at least 5,000 miles.

BTW, 172,000 on Mary's car and it runs perfect (now), too. Oil changes at 5,000 miles.

[L.Mark]

Wow, 5000 mile interval...not sure I can get used to that. Always done the 3000 interval...

[License2Bill]

The Ford Dealership near me has a semi-synthetic blend that they offer a $19.95 special on. The windshield reminder sticker shows 7,000 miles before I would have to bring it back. I'm about halfway there now. Car currently has 114,xxx on it and its due at 117,938

[RF Overlord]

3,000 miles was good advice in the '50s and '60s. Oils back then were Group I and not very good, plus you had faulty chokes making hugely rich mixtures, not to mention lead in the gas.

Engines and oils today are so far superior to those of even 20 years ago. The only people who still recommend 3,000 miles are the oil companies (big surprise) and the the quick-lube places. Conventional oil is good for 5,000 miles without batting an eye, and synthetic is good for 10,000 all day long. Ford even recommends 10,000 in the new Mustangs with semi-syn.

3,000 miles is to oil as dial-up is to the internet.

[F2F]

170k I run Roayal Purple oil and filter. I only change every 5k. Its way more often then most do when using Roayal.

[Bluerauder]

93,500 miles. Change every 5,000 with Motorcraft filter and Semi-Synthetic blend.

[Cougar_Marauder]

Just rolled 60k this weekend :banana2: I use Royal Purple (switched to 5w-30 last year) every 3-5k miles

[SC Cheesehead]

Changing M1 oil at 3,000 miles is a HUGE waste that buys you nothing. Either go back to conventional or run it at least 5,000 miles.

BTW, 172,000 on Mary's car and it runs perfect (now), too. Oil changes at 5,000 miles.


3,000 miles was good advice in the '50s and '60s. Oils back then were Group I and not very good, plus you had faulty chokes making hugely rich mixtures, not to mention lead in the gas.

Engines and oils today are so far superior to those of even 20 years ago. The only people who still recommend 3,000 miles are the oil companies (big surprise) and the the quick-lube places. Conventional oil is good for 5,000 miles without batting an eye, and synthetic is good for 10,000 all day long. Ford even recommends 10,000 in the new Mustangs with semi-syn.

3,000 miles is to oil as dial-up is to the internet.


Yup.

Actually 5K is basically just a benchmark number. The best way to determine oil change frequency on any given car is by oil analysis.

FWIW, I've been holding to a 5,000 mile interval, just turned 81K on the clock, S/C'd at 50K, and still runs like a Swiss watch.

[Spectragod]

Mobile 1 oil & filter, almost 23k on the car, I change my oil & filter once, maybe twice a year, usually 3-600 miles for the year though, total, not between oil changes.

[FreddieH]

Mobile 1 @ 5,000 miles with 90,080 miles and still running strong.

[cat in the hat]

3,000 miles was good advice in the '50s and '60s. Oils back then were Group I and not very good, plus you had faulty chokes making hugely rich mixtures, not to mention lead in the gas.

Engines and oils today are so far superior to those of even 20 years ago. The only people who still recommend 3,000 miles are the oil companies (big surprise) and the the quick-lube places. Conventional oil is good for 5,000 miles without batting an eye, and synthetic is good for 10,000 all day long. Ford even recommends 10,000 in the new Mustangs with semi-syn.

3,000 miles is to oil as dial-up is to the internet.

+1.

Also, if you're not doing extended intervals, you could use less-expensive filters like Motorcraft and save a few more bucks on the M1's IMO.

ETA : Mobil 1 or Pennzoil Platinum, 5/30, with MC FL 820-S filters. About 50k on the odometer ; drive her less than 3k per year now, so I change it by time - once per year in the spring.

[Mebot]

Yup.

Actually 5K is basically just a benchmark number. The best way to determine oil change frequency on any given car is by oil analysis.


Correct

Speaking of oil analysis, check your dipstick everytime you fill up. If you are low, top off. I keep qts of oil in my trunk just in case. Rarely do i see people at the pumps check their oil. Its become old fashioned i guess. It's habit for me

sent from space

[SC Cheesehead]

Correct

Speaking of oil analysis, check your dipstick everytime you fill up. If you are low, top off. I keep qts of oil in my trunk just in case. Rarely do i see people at the pumps check their oil. Its become old fashioned i guess. It's habit for me

sent from space

Same here. Usually check mine every time I take it out (which ain't too often, these days...).

[Dave2]

3,000 miles was good advice in the '50s and '60s. Oils back then were Group I and not very good, plus you had faulty chokes making hugely rich mixtures, not to mention lead in the gas.

Engines and oils today are so far superior to those of even 20 years ago. The only people who still recommend 3,000 miles are the oil companies (big surprise) and the the quick-lube places. Conventional oil is good for 5,000 miles without batting an eye, and synthetic is good for 10,000 all day long. Ford even recommends 10,000 in the new Mustangs with semi-syn.



This......^

[LostInTennessee]

CASTROL Full synthetic 5W-30 every approx. 4000 miles

[ChiTownMaraud3r]

Once a year with Mobil1 0w20, 18,xxx miles.

[Vortech347]

Every 5k FoMoCo 5w-20 FoMoCo filter.

106k current.

[ARodmarauder]

Every 5k FoMoCo 5w-20 FoMoCo filter.

106k current.


^^^^^

What he said

[michael ward]

20,700 miles every 3000 miles fomoco oil and filter

[tbone]

140k
Mobil 1 or Royal Purple (on the last change) with Mobil 1 high capacity filter every 3k. Overkill and I don't care. :beer:

[Motorhead350]

Every 3,000 or three months and I am just under 210,000, BUT this is not my original engine or drivetrain. I get 5w-30 Valvoline synthetic for $11.50 out the door. I don't care if people say 5,000 is a thing of the past, all my friends with higher mileage cars that go long between oil changes are all blowing their head gaskets now and I am still chugging along. Also, due to the modifications I am extra religious about oil changes.

Transmission sees four new quarts every other oil change, supercharger sees new oil every 6,000 and I buy it from the company. I cheaped out where I bought the oil and did it every 10,000 miles on the first Procharger set up. The results cost me a few rebuilds.

For the cost of oil changes even if it's overkill, I would rather have spend too much money on oil changes and have it last longer than do less of them and have repairs sooner in life.

I plan on driving my car as long as possible and as long as it's my daily driver, nothing is overlooked.

[SC Cheesehead]

Every 3,000 or three months and I am just under 210,000, BUT this is not my original engine or drivetrain. I get 5w-30 Valvoline synthetic for $11.50 out the door. I don't care if people say 5,000 is a thing of the past, all my friends with higher mileage cars that go long between oil changes are all blowing their head gaskets now and I am still chugging along. Also, due to the modifications I am extra religious about oil changes.

Transmission sees four new quarts every other oil change, supercharger sees new oil every 6,000 and I buy it from the company. I cheaped out where I bought the oil and did it every 10,000 miles on the first Procharger set up. The results cost me a few rebuilds.

For the cost of oil changes even if it's overkill, I would rather have spend too much money on oil changes and have it last longer than do less of them and have repairs sooner in life.

I plan on driving my car as long as possible and as long as it's my daily driver, nothing is overlooked.

Changing oil on a higher frequency basis will not extend the life of your engine, it will just cost you more money.

[RF Overlord]

Changing oil on a higher frequency basis will not extend the life of your engine, it will just cost you more money.Quoted for truth.


all my friends with higher mileage cars that go long between oil changes are all blowing their head gaskets now Blowing head gaskets has nothing to do with oil change frequency. Your friends have other issues...

I'm not trying to "convince" anyone to do something they aren't comfortable with. I just want people to have valid info instead of old wive's tales and mis-information so they can make informed decisions. This isn't your grandfather's Oldsmobile; what was good advice at the time doesn't apply anymore.

BTW, Pennzoil causes sludge. My barber's brother's gardener's son-in-law heard it from guy who knew a mechanic who said so.

[SC Cheesehead]

Quoted for truth.

Blowing head gaskets has nothing to do with oil change frequency. Your friends have other issues...

I'm not trying to "convince" anyone to do something they aren't comfortable with. I just want people to have valid info instead of old wive's tales and mis-information so they can make informed decisions. This isn't your grandfather's Oldsmobile; what was good advice at the time doesn't apply anymore.

BTW, Pennzoil causes sludge. My barber's brother's gardener's son-in-law heard it from guy who knew a mechanic who said so.


Hmmmmm, I have issues from time to time as well. I wonder if more frenquent oil changes on my car would help? :dunno:


;) --------> :D

[ctrlraven]

Rolling up on 200k miles. Oil changed every 5k miles and currently using Mobil 1 5w30 high mileage for the past year or so. Before that was M1 5w20 and Motorcraft oil filter always used besides twice when I used a K&N and Purolator filter once each time.

[fastblackmerc]

Hmmmmm, I have issues from time to time as well. I wonder if more frenquent oil changes on my car would help? :dunno:


;) --------> :D

Rex... you know it won't.

Best thing to get is an oil analysis. It will tell you what is going on inside the engine. I use Blackstone labs. The test kits are free, test costs $25.00.

This is what they check:
Spectral exam:
In the spectral exam, we take a portion of your oil sample and run it through a machine called a spectrometer. The spectrometer analyzes the oil and tells us the levels of the various metals and additives that are present in the oil. This gives us a gauge of how much your engine is wearing. To learn more about the elements we look at and where they come from in your oil, go to our Report Explanation page.

Insolubles test:
The insolubles test measures the amount of abrasive solids that are present in the oil. The solids are formed by oil oxidation (when the oil breaks down due to the presence of oxygen, accelerated by heat) and blow-by past the rings. This test tells you how good a job the oil filter is doing, and to what extent the oil has oxidized.

Viscosity test:
The viscosity measures the grade, or thickness, of the oil. Whether it's supposed to be a 5W/30, 15W/40, or some other grade, we will know (within a range) what the viscosity should be. If your viscosity falls outside that range, there's probably a reason: the oil could have been overheated or contaminated with fuel, moisture, or coolant.

Flash Point test:
The Flash Point test measures the temperature at which vapors from the oil ignite. For any specific grade of oil, we know what temperature the oil should flash at. If it flashes at or above that level, the oil is not contaminated. If the oil flashes off lower than it should, then it's probably been contaminated with something. Fuel is the most common contaminant in oil.

They will also recommend an oil & filter change interval. Mine is always 6k. Too hard for me to remember so I change at every 5k.

[SC Cheesehead]

Rex... you know it won't.

Best thing to get is an oil analysis. It will tell you what is going on inside the engine. I use Blackstone labs. The test kits are free, test costs $25.00.

This is what they check:
Spectral exam:
In the spectral exam, we take a portion of your oil sample and run it through a machine called a spectrometer. The spectrometer analyzes the oil and tells us the levels of the various metals and additives that are present in the oil. This gives us a gauge of how much your engine is wearing. To learn more about the elements we look at and where they come from in your oil, go to our Report Explanation page.

Insolubles test:
The insolubles test measures the amount of abrasive solids that are present in the oil. The solids are formed by oil oxidation (when the oil breaks down due to the presence of oxygen, accelerated by heat) and blow-by past the rings. This test tells you how good a job the oil filter is doing, and to what extent the oil has oxidized.

Viscosity test:
The viscosity measures the grade, or thickness, of the oil. Whether it's supposed to be a 5W/30, 15W/40, or some other grade, we will know (within a range) what the viscosity should be. If your viscosity falls outside that range, there's probably a reason: the oil could have been overheated or contaminated with fuel, moisture, or coolant.

Flash Point test:
The Flash Point test measures the temperature at which vapors from the oil ignite. For any specific grade of oil, we know what temperature the oil should flash at. If it flashes at or above that level, the oil is not contaminated. If the oil flashes off lower than it should, then it's probably been contaminated with something. Fuel is the most common contaminant in oil.

They will also recommend an oil & filter change interval. Mine is always 6k. Too hard for me to remember so I change at every 5k.


^^^^^^^^ Yup, yup, and yup.

[fastblackmerc]

Every 3,000 or three months and I am just under 210,000, BUT this is not my original engine or drivetrain. I get 5w-30 Valvoline synthetic for $11.50 out the door. I don't care if people say 5,000 is a thing of the past, all my friends with higher mileage cars that go long between oil changes are all blowing their head gaskets now and I am still chugging along. Also, due to the modifications I am extra religious about oil changes.

Transmission sees four new quarts every other oil change, supercharger sees new oil every 6,000 and I buy it from the company. I cheaped out where I bought the oil and did it every 10,000 miles on the first Procharger set up. The results cost me a few rebuilds.

For the cost of oil changes even if it's overkill, I would rather have spend too much money on oil changes and have it last longer than do less of them and have repairs sooner in life.

I plan on driving my car as long as possible and as long as it's my daily driver, nothing is overlooked.
The key to keeping a car driveable as long as possible is to stay on top of things. Don't let the leak go to long... fix that squealing noise... etc. The longer you wait to fix things the worse it will get and more money will be needed to fix the problem.

As Bob said.... oil changes have NO effect on whether head gaskets blow or not.

Dom, save yourself money and get an oil analysis. Only use quality parts when doing maintenance and repairs.

[RoyLPita]

124.4K. Since 8/16/05 @ 7811 miles, I've changed the oil with 5/20 syn-blend with one FL820S filter. It is done every 2500-3k. One time I went 4500 miles on 5/30 full synthetic.

[pfuster78]

Moble 1 and motorcraft filter every 6,000. Starting to make noise on driverside ( chain ) I quess.

[Ozark Marauder]

93,500 miles. Change every 5,000 with Motorcraft filter and Semi-Synthetic blend.

82,800- Same here...^^^

Next time I'm going to get a oil sample and send it here, I've read a lot of members do this:

http://www.blackstone-labs.com/

OZ

[Motorhead350]

The key to keeping a car driveable as long as possible is to stay on top of things. Don't let the leak go to long... fix that squealing noise... etc. The longer you wait to fix things the worse it will get and more money will be needed to fix the problem.

As Bob said.... oil changes have NO effect on whether head gaskets blow or not.

Dom, save yourself money and get an oil analysis. Only use quality parts when doing maintenance and repairs.

I completely agree.

Nothing get's "let go" and only OEM parts go in the car usually the week an issue occurs. I learned the hard way about the LCM, but it was still an OEM part... just not a new one.

[Vortech347]

They will also recommend an oil & filter change interval. Mine is always 6k. Too hard for me to remember so I change at every 5k.

White board in the garage or get the free windshield stickies at the autopart store.

I got 4 cars I regularly switch between. No way I can remember.

[tbone]

Changing oil on a higher frequency basis will not extend the life of your engine, it will just cost you more money.

I like the warm fuzzies I get changing it at 3k. Plus 3k takes me 4-5 months to get to, and most of my trips are short. Soooo, don't care about a few extra pesos.:bandit:

[SC Cheesehead]

I like the warm fuzzies I get changing it at 3k. Plus 3k takes me 4-5 months to get to, and most of my trips are short. Soooo, don't care about a few extra pesos.:bandit:

Synthetic or syn blends don't pick up moisture like earlier petrol-based oils did, so duration isn't an issue either.

Best bet is oil analysis to determine change frequency.

Fewer oil changes = more money for beer.

WIN-WIN!!! :beer:

[vkirkend]

Rex... you know it won't.

Best thing to get is an oil analysis. It will tell you what is going on inside the engine. I use Blackstone labs. The test kits are free, test costs $25.00.

This is what they check:
Spectral exam:
In the spectral exam, we take a portion of your oil sample and run it through a machine called a spectrometer. The spectrometer analyzes the oil and tells us the levels of the various metals and additives that are present in the oil. This gives us a gauge of how much your engine is wearing. To learn more about the elements we look at and where they come from in your oil, go to our Report Explanation page.

Insolubles test:
The insolubles test measures the amount of abrasive solids that are present in the oil. The solids are formed by oil oxidation (when the oil breaks down due to the presence of oxygen, accelerated by heat) and blow-by past the rings. This test tells you how good a job the oil filter is doing, and to what extent the oil has oxidized.

Viscosity test:
The viscosity measures the grade, or thickness, of the oil. Whether it's supposed to be a 5W/30, 15W/40, or some other grade, we will know (within a range) what the viscosity should be. If your viscosity falls outside that range, there's probably a reason: the oil could have been overheated or contaminated with fuel, moisture, or coolant.

Flash Point test:
The Flash Point test measures the temperature at which vapors from the oil ignite. For any specific grade of oil, we know what temperature the oil should flash at. If it flashes at or above that level, the oil is not contaminated. If the oil flashes off lower than it should, then it's probably been contaminated with something. Fuel is the most common contaminant in oil.

They will also recommend an oil & filter change interval. Mine is always 6k. Too hard for me to remember so I change at every 5k.

Rex, what he said....:burnout:

[lji372]

I personally would rather be safe than sorry and do my oil too often. As much money as I put in the gas tank I can afford an extra oil change.

Just switched one over to Bradd Penn and am switching the other over on the next change

After talking to Chris over at white racing who pulls motors apart and puts them back together told me it is night and day when looking at the parts after a tear down.

[sflrainmaker01]

My 04 has 72,7xx now. Bought 1 month ago with 71,521. I immediately took it to my local Ford dealer who changed Coolant and Oil. I believe they used the 5w-20 syn-blend with Motorcraft filter. I will probably change this oil at 3k since I don't know the history of the car and then keep it to 6mo or 5,000 on the oil change schedule using Motorcraft stuff.
Maybe change to 5w-30 down here in South Florida? :dunno:

[tbone]

I personally would rather be safe than sorry and do my oil too often. As much money as I put in the gas tank I can afford an extra oil change.




:beer::beer::beer:

[Marauderjack]

I have run Mobil I since 1st change in early 2004!! Ever since I've change the oil and the filter (Motorcraft ONLY) every 5K miles......currently have 247K+ on the original motor with the last 163K miles SuperCharged!!:beer::bows:

It has never used any oil and just keeps on going....and going.....and going!!:eek::burnout:

BEST car I've ever owned!!:beer:

[F2F]

I have run Mobil I since 1st change in early 2004!! Ever since I've change the oil and the filter (Motorcraft ONLY) every 5K miles......currently have 247K+ on the original motor with the last 163K miles SuperCharged!!:beer::bows:

It has never used any oil and just keeps on going....and going.....and going!!:eek::burnout:

BEST car I've ever owned!!:beer:

I'm assuming that you use yours as a dd? That's awesome I have 170k and Will be adding the supercharger soon.:beer:

[lji372]

I have run Mobil I since 1st change in early 2004!! Ever since I've change the oil and the filter (Motorcraft ONLY) every 5K miles......currently have 247K+ on the original motor with the last 163K miles SuperCharged!!:beer::bows:

It has never used any oil and just keeps on going....and going.....and going!!:eek::burnout:

BEST car I've ever owned!!:beer:

Holy moly!! That's awesome:D

[SC Cheesehead]

Holy moly!! That's awesome:D

No shat!!!

http://andrei-art.com/wordpress/wp-content/uploads/2010/03/Bunny_medium.jpg

[ChiTownMaraud3r]

I have racked up major miles on my 03 GM recently (SOHC). I obtained it in November 2010 with 47k miles, it is now approaching 88k. I notice not exactly 6 qts come out of the pan, actually I can pretty much fill a 5qt mobil 1 jug to the top with what comes out of the car. I see the oil dip stick has the level about half way down the cross hatches. I have never noticed any blue smoke, nor is the car leaking oil. I also tend to change the oil/filter every 5k miles or so.

I switched from regular 5w30 mobil 1 full syn to high mileage 5w30 mobil 1 full syn and haven't noticed a difference. Is this normal operation at this mileage and age with the daily abuse or am I over-thinking and just not letting the pan drain fully, and not taking into account the 5qt jugs never come filled to the top?

[Vortech347]

One thing that makes me chuckle about the oil testing thing. I've never once heard someone say "oh no, doesn't look good. Engine runs fine though. I'm going to rebuild it since the test came back bad."

[Roadwarrior]

Approaching 102k total miles on mine. Change interval of 5k with either Mobil 1 or Pennzoil synthetic 5W-30 with a Motorcraft FL820-S oil filter since day 1.

[Black Terror]

I have 73000 Miles, have used Royal Purple in Engine, Transmission, and Rear Axle since first oil change. Change every 5K.

[JOEMERC]

Change mine once a year ,only put 5000 miles or more on a year so no big deal and I use full synthetic Pennzoil Platinum 5w30 .don't understand why people don't switch over to full synthetic oil ,I think our cars are worth it .synthetic blend oil only has around 25% synthetic oil in a quart rest contains conventional oil.

[RF Overlord]

synthetic blend oil only has around 25% synthetic oil in a quart rest contains conventional oil.Most syn-blends are actually quite a bit higher in order to achieve API SN. Motorcraft 5W-20 is almost 60% synthetic.

[L.Mark]

If I switch my wifes 2003 Impala to full synthetic wil I be able to push back the oil change interval from 3,000 to 5,000. It has @116,000

[fastblackmerc]

If I switch my wifes 2003 Impala to full synthetic wil I be able to push back the oil change interval from 3,000 to 5,000. It has @116,000

Yes..............

[L.Mark]

Awesome!!! And have the same protection is nice...Just so happens she's up for an oil change this weekend...guess what I'm gonna do...:cool:

[HBTMD]

Every manufacturer of every product claims that their stuff is better than everyone elses.

Is their any unbiased scientific evidence to tell who has the best synthetic oil for my MM? :banana2:

My baby usually gets Mobil 1 and a Mobil 1 filter. But I would expect that Castrol, Quaker State, Penzoil, and Royal Purple have quality products as well. :beatnik:

Other than mere brand loyalty, is their any valid reason to pick one product over another? :beer:

[fastblackmerc]

Every manufacturer of every product claims that their stuff is better than everyone elses.

Is their any unbiased scientific evidence to tell who has the best synthetic oil for my MM? :banana2:

My baby usually gets Mobil 1 and a Mobil 1 filter. But I would expect that Castrol, Quaker State, Penzoil, and Royal Purple have quality products as well. :beatnik:

Other than mere brand loyalty, is their any valid reason to pick one product over another? :beer:

No....

As long as your brand of synthetic or dino oil meet the manufactures specs your OK.

More than you ever wanted to know about oil:
http://www.bobistheoilguy.com/motor-oil-101/

Info about oil analysis:
http://www.bobistheoilguy.com/engine-oil-analysis/

Link to the entire site:
http://www.bobistheoilguy.com/

[sweetair]

37,xxx miles. Mobil1 and NAPA Gold oil filter. Change the oil about once a year, maybe a little less than a year. Only 1500 miles are put on in a year. I do it more regarding the time.

Yeah it is a waste. I have a lift, I have the time and love tinkering with her. I also open the trans pan plug (I switched to a pan that has a plug) and refill with Motorcraft Mercon fluid. Just to keep that fresh too.

[Showroom]

I change once a year,but I only put about 6-7 hundred miles a year on mine.Mobil 1 all the way with motorcraft filter.Almost 17K on it.The oil is still amber when I change it:bigcry:

[SC Cheesehead]

I change once a year,but I only put about 6-7 hundred miles a year on mine.Mobil 1 all the way with motorcraft filter.Almost 17K on it.The oil is still amber when I change it:bigcry:

Actually, should be no need to change it annually, then. You can confirm that via oil analysis.

[Mr. Man]

SB used to be a DD and it used to go 10-12K on synthetic and some sort of Napa filter. Now at 113K or so I use an FL820S once a year with dino, usually in the late fall. Car accumulates maybe 2K miles +/-. Change it more for the acid relief more than dirt.

Black at 21K gets an FL820S and dino for the same as reason as the SB. I put maybe 500 miles on it over the season.

[frdrckmarauder]

I have a DTR. 95 k miles. Change oil every 5k or so, put whatever I want in it. Car has been in many major accidents. Looks great and turns many heads. Looks as good as many "never in rain" or "never sat in" MM's. Drives great.

[RF Overlord]

Is their any unbiased scientific evidence to tell who has the best synthetic oil for my MM?There is no such thing as the "best" oil.
Other than mere brand loyalty, is their any valid reason to pick one product over another? No. Just stay away from off-brand convenience store oils.

[Motorhead350]

Theres is no such thing as the "best" oil.

Can we agree to synthetic?

:D

[JOEMERC]

Yes switch to full synthetic and save conventional oil for our lawn mowers,lol.

[RF Overlord]

While synthetic oil can be considered "better than" conventional oil, I meant to say that there is no "best" oil brand...Mobil 1, Pennzoil Platinum, Royal Purple, Red Line, AMSOIL, Castrol Edge...they're ALL excellent oils...none is "best".

[whd507]

Mobil 1 5-20, Motorcraft filter, 10,000 mile intervals, 17x,xxx miles (too lazy to walk out and check)

Trans fluid also Mobil 1, with finned pan