Tried 89 octane

[Bradley G]

With 9k on the clock,I tried a tank of midgrade fuel.Couldn't feel hear any difference??I will not put it in all the time but,:dunno: makes me wonder

[FiveO]

I treated my then new 1999 SHO to premuim for a year after I bought it. Then, at the advice of some people in the SHO community I went to 87 octane. She sputtered and complained for a couple tankfuls then got used to it.

I got my best mileage and best time at the track on 87 octane.

[Dan]

I wonder if the car can detect this and record it. If so, there could be warranty issues.

Why would you guys risk something like that? I don't understand.

Best,

Dan

[jgc61sr2002]

Regular fuel in the Marauder is a NO NO. :lol:

[FiveO]

I haven't used anything but high test in the Marauder.

Probably won't either with the s/c going on in 2 weeks.


Does the dash say "Premium Recommended"? or "Premium Only"?

I'll check when I head back out to the garage :)

[Jaguar]

I alternate between 89 and 93. Averages out to 91 right ;)

[Bradley G]

some places and times its not available I just tried it to see but I now know if it's all that is available it will still run OKQUOTE=Dan]I wonder if the car can detect this and record it. If so, there could be warranty issues.

Why would you guys risk something like that? I don't understand.

Best,

Dan[/QUOTE]

[Bradley G]

premium only
I haven't used anything but high test in the Marauder.

Probably won't either with the s/c going on in 2 weeks.


Does the dash say "Premium Recommended"? or "Premium Only"?

I'll check when I head back out to the garage :)

[MMdriver03]

onlyy had to use 89 once while on a road trip..other than that its 93 or so for me :cool4:

[bugsys03]

The computer detects the lower octane and adjusts accordingly I believe to keep it from pinging. I wouldnt be hammering on it though. I also wouldnt do it to save $1.50 per tank :nono:

[valleyman]

Oh to live in a state where 93 octane is available. I guess I'll just drive up to Yosemite and pout about it. ;)

[David Morton]

There is no sensor that can detect the octane rating of your gas, but I wouldn't put it past some of the dealers to take a sample and send it out for analysis if the engine was in for a hole in a piston or hammered out wrist pin. Yeah, why would anyone do such a sacrelige to a Marauder? Anybody out there running around on bald tires too?

I always zero my odometer when I fill up so I can guage about how many gallons she's gonna take and I buy half 93 and half 89. I round up for the 93, for instance, 8G if I think she'll take 15, so I always wind up with a 91+ blend.

Yeah, I remember the old 'dinosaur' pumps at the Phillips 66 and you could dial in up to 96 octane, blended the gas right there at the pump. Wish they'd bring those back.

[FordNut]

I only use 93 in mine, as it's highly modded.

Wife's has only had 87 ever since new, it's stock, no problems at 33,700 miles.

[cyclone03]

Mid Grade ,89,ALWAYS gives me 1-1 1/2 mPG better than 93.

Don't tell anybody but thats with a DR tune too.

That said when it's track time 93 goes in.


When mine was stock I ran 87reg on long road trips keeping the rpm below 3000 and no WOT.

[Ross]

I have always been confused at the fact that our cars are meant for 91 octane gas. I don't think I have ever SEEN 91 octane. Where I live and drive, all I see is 87, 89 and 93.

[Fourth Horseman]

With the program I have loaded my car is rather sensitive to octane rating. Anything less than 91 and I get some pinging. For the price difference I don't think it's worth trying to skimp. 91 or better for my sled.
:burn:

[Bradley G]

I thought that's what I would hear too.I only tried (WOT) once or twice to see, I swear, I told my wife this , about trying mid grade and she gave me a shot too!!"Boy, I would have never expected that"she said. Now the car is being driven over 3oo mi. a week whereas when I drove it every day, I was driving less than half that far.I am taking Fordnuts' approach and spoil 'er with go fast goodies till that's all she'll run on :rock:
With the program I have loaded my car is rather sensitive to octane rating. Anything less than 91 and I get some pinging. For the price difference I don't think it's worth trying to skimp. 91 or better for my sled.
:burn:

[Captain Steve]

I have always been confused at the fact that our cars are meant for 91 octane gas. I don't think I have ever SEEN 91 octane. Where I live and drive, all I see is 87, 89 and 93.
There are some places in the country that simply don't have 93 octane available. 91 is premium in those evil places :whistle:

I'm thinking that when I order my Stage 1 kit from Dennis, I'm going to ask him to tune it for 93, since that's what I've got out here :cool4:

[Fourth Horseman]

There are some places in the country that simply don't have 93 octane available. 91 is premium in those evil places :whistle:

I'm thinking that when I order my Stage 1 kit from Dennis, I'm going to ask him to tune it for 93, since that's what I've got out here :cool4:

Yeah, I live in one of those evil places. 91 is all I can get. I had Dennis load my tuner with both 91 and 93 octane programs. Maybe some day I'll get to use the 93 program. :depress:

[423REED]

I have always been confused at the fact that our cars are meant for 91 octane gas. I don't think I have ever SEEN 91 octane. Where I live and drive, all I see is 87, 89 and 93.
I only use Amoco/BP or Shell premium 93 octane, not the 91 octane minimum that is recommended in the owner's manual. My cars just love this quality of gas and they run like race cars. I could put in something lower in octane, and cheaper gas. But its not worth having any engine problems, especially with the new Marauder (under factory warranty). My SHO has always had quality premium gas, usually Thornton's premium, and as a result, it has always run great with no pinging, hesitation, or hard starting.
__________________________
2004 MARAUDER 300A - DTR
1994 TAURUS SHO - DK GREEN

[chapel1]

When I was a kid my Uncle let me fill up my "60" T-bird" from his tractor fuel storage tank. He said gas is gas "it will burn"?
I know that was the old days and I did save 35 cents a gallon. And that was a lot in 1967! But within a hour and a half of highway driving I heard a couple of loud pops! The fastest I could go was about 50 miles per hour. The valve job cost me around $250.00 back then.
Now I burn B/P Amoco Premium and maybe Shell Premium.

[Ross]

When I was a kid my Uncle let me fill up my "60" T-bird" from his tractor fuel storage tank. He said gas is gas "it will burn"?
I know that was the old days and I did save 35 cents a gallon. And that was a lot in 1967! But within a hour and a half of highway driving I heard a couple of loud pops! The fastest I could go was about 50 miles per hour. The valve job cost me around $250.00 back then.
Now I burn B/P Amoco Premium and maybe Shell Premium.

At least you didn't fill it up from his diesel tank! I've seen people make that mistake a time or two. Always very interesting results. :bricks:

[Bradley G]

I did that to my motorcycle once, wasn't pretty no damage:eek:
At least you didn't fill it up from his diesel tank! I've seen people make that mistake a time or two. Always very interesting results. :bricks:

[valleyman]

I did that to my motorcycle once, wasn't pretty no damage:eek:

This may sound strange, but I'm glad to hear that. Because now I know that I'm not the only one who's done it: half filled the tank of a '72 Moto Guzzi with diesel before I realized my mistake. Filled it the rest of the way with gas. To my surprise it started. Smelled like a Kenworth truck for the rest of the day but it lived for another 40,000 miles.

[Bradley G]

I always went to the same station to the same pump for my premium leaded fuel one day I'm filli'n up as I had dozens of times, when the attendent said somthing like Your bike runs on that?? I did'nt think anything about what he said and replied "YEAH!!" It wasn't till I got a couple blocks home and the bike turned into a fog machine. inched home and had to drain the tank and drop the bowls on the carbs but it was fine after that . Not somthing I like to admitt:dunno:
This may sound strange, but I'm glad to hear that. Because now I know that I'm not the only one who's done it: half filled the tank of a '72 Moto Guzzi with diesel before I realized my mistake. Filled it the rest of the way with gas. To my surprise it started. Smelled like a Kenworth truck for the rest of the day but it lived for another 40,000 miles.

[86GRANDMARQUIS]

I reg see 87,89,91,92,93 and 94(Sunoco) in this area. 2 stations I found offer 100 unleaded for $3.85 a gallon.:P

[mpearce]

I reg see 87,89,91,92,93 and 94(Sunoco) in this area. 2 stations I found offer 100 unleaded for $3.85 a gallon.:P
Be careful with some stations that claim to sell 94 octane. I was using sunoco 94 from a small neighborhood station untill...I got my tune for 93-94 and began to get knock. Backed the timing out a bit, and it still knocked. Must not have been 94 they were selling me, not even close. Either that, or it was just a god awful batch of gas. Got some BP 93 from a larger station, and evrything was fine. Also, theres a shop down the street that sells VP race unleaded 103. Works perfect with my second position race tune. Thats my choice for the strip!

-Mat

[jstevens]

I do have bald tires on the rear for now. LOL
But for gas, I run 93 BP Premium.
Its just not worth taking the chance. Plus, I like to drive it fast.

[kode3]

We only have 91 here in the Sacramento, California area.... it sucks. :razz:

[Bradley G]

We only have 91 here in the Sacramento, California area.... it sucks. :razz:The gas might suck but,














;) your weather sure looks nice

[Fourth Horseman]

The gas might suck but,
;) your weather sure looks nice

That's a nice looking LX Sport he has, too.
:rock:

[Mikeenh]

For some reason 12,000 miles a year on a car is supposed to be average. Most put on more.
So 12,000 miles at 20 mpg (taking the low side) is 600 gallons of fuel. If you spent 10 cents more a gallon for the good stuff, thats ONLY an extra $60 a year. 20 cents ? only $120. The cheapest mod you put on is usually more than that. :dunno:
Treat your $35,000 investment nice.

[Fourth Horseman]

For some reason 12,000 miles a year on a car is supposed to be average. Most put on more.
So 12,000 miles at 20 mpg (taking the low side) is 600 gallons of fuel. If you spent 10 cents more a gallon for the good stuff, thats ONLY an extra $60 a year. 20 cents ? only $120. The cheapest mod you put on is usually more than that. :dunno:
Treat your $35,000 investment nice.

Very well said. :stupid: I couldn't agree more.

[Bradley G]

I Bradley G. hearby take an oath never to put anything but Premium in the Marauder:banghead:

[Rob1559]

This is from Motorcyclist magazine August 2004 on fuel Octane ratings.

Octane ratings are a simple way of stating a fuel's resistance to detonation in a laboratory engine according to the Society of Automotive Engineers (SAE) testing protocols. The higher the octane rating, the more resistant the fuel is to detonation-meaning the fuel is less volatile, or less likely to set off on its own accord.
As for power, high octane pump gas of, say, 91 octane may have slightly less potential heat content because of the additives necessary to boost octane compared to the base 87 octane stuff.


I run 87 in my bike and it is definately higher performance than my MM. No problems with the bike.



I use only 87 in my MM since June 03 and it runs fine. Save your money.

[Dan]

I do a lot of things that others don't do and they work for me but, in cases where I am not a scientist or a recognized expert, I am hesitant to make recommendation that could be potentially damaging.

In your case, with the 87, you are having good luck. But, unless there is a way to determine whether your case is the exception or the rule a wise person would do well to be more than a bit sceptical

I run the factory recomended fuel and have noticed that I can still get a little tiny bit of pinging and it always seems to happen after I have gone to a "no name" station.

-Dan

[merc406]

Anything less than 91, is for Lawnmowers.........