What oil are you using in your Marauder?

[RF Overlord]

What oil are you currently using:

[jefferson-mo]

Motorcraft 5w-20 full synthetic

part no. XO-5W20-QFS

I think that's what it says in the owner's manual

(don't use the "T" word in your title)

[Fourth Horseman]

Mobil 1 5w30 and Mobil 1 filter for me.:up:

[TAF]

Royal Purple 5w30 - Motorcraft Filter

[Effster]

castrol syntech 5-30,motorcraft filter.after puttin a REAL gauge in,dont try and run a "cheap" filter.this thing has over a 100 pounds when cold.cheap filters Will explode

[WolfeBros]

Jack Daniels on the .........oopsssss sorry wrong post:lol:

[WolfeBros]

Speaking of 100 psi oil pressure cold (which I concur with) ........anyone out there know if this thing even has a pressure relief valve ???

[cyled]

AMSOIL For Me!

[MM03]

MOBIL 1 5W30 and Motorcraft filter.

[MN6]

Mobil 1 5w30 and Mobil 1 Filter

[JohnE]

I had major oil issues under severe use, extended 70-80mph boat towing on 85F day. The engine used 2 quarts in 600miles. It had never used any prior to that. This was conventional 5W-30, the only oil called for by my manual.

I have switched to a full synthetic.

[Long Live #3]

Penzoil 5W-30 Full Synthetic and Fram Filter.

[Menace]

Mobil 1 5w30 :burnout:

[Hemlock]

QUAKERSTATE 5W-30W BLEND AND FORD FILTER (MY DEALER DOES THE SERVICE) HAVE 21,850 MILES W/O PROBLEMS.

[jgc61sr2002]

Motorcraft 5 W 20 Synthetic Blend with motorcraft filter. Jefferson I don't believe Motorcraft makes a 5 W 20 Synthetic. John

[JohnnyB]

Mazzola.......

[nexstar7]

the BOOK says. use 5w-20 premium synthetic BLEND. 6.0 quarts. i hope thats what the dealers use. anybody ever check them out when they do it?

[RF Overlord]

Quite a few people have said the dealer put in whatever they brought with them (Mobil 1, etc)...so many dealers apparently don't think it's all that critical...

[JohnnyB]

Dealers are using 5W-20... at least that's what it says on the service receipt

[jgc61sr2002]

Originally posted by RF Overlord
Quite a few people have said the dealer put in whatever they brought with them (Mobil 1, etc)...so many dealers apparently don't think it's all that critical... I think the dealer really doesn't know and I will use the Motorcraft 5 W 20 Synthetic Blend as recommended in the owners manual. To date the only 5 W 20 oil I have seen was Motorcraft. IMHO. John

[uwsacf]

Just got her first Amsoil 3000 fillup - 5w30

Good for 25K........

Plus the Amsoil synthetic filter.......

'Course she has 1000 miles on her now..... (picked up 5/31)

4 oil changes with filters in the first thousand to get the casting nodules/flash and sand from the casting out first though...

And you thought I was anal......

[Heavy D.]

currently Motorcraft 5w-20 synthetic blend, switching to Mobil 1 0w-20 after break in. FYI, Havoline and Valvoline both make non-synthetic 5w-20.

[Bigdogjim]

Originally posted by RF Overlord
Quite a few people have said the dealer put in whatever they brought with them (Mobil 1, etc)...so many dealers apparently don't think it's all that critical...

And when you get your receipt it states '03 Mercury??

[JohnnyB]

dealer put in 5w-20 6 qts part # XO*5W20*QSP

Is this synthetic blend

[Heavy D.]

JohnnyB,
If it's Motorcraft (most likely) then it's synthetic blend.

[tetsu]

I'm running Motorcraft blend and am switching to Amsoil 5w20 next change with motorcraft filter.

Johnny

[Marauder57]

I just did my first oil change (1,000 miles) and put in Mobil 1 5W30 with Mobil 1 oil filter....then proceeded to do my first WOT. Holy G-Forces Batman! :banana2:

[drobin]

Using Mobil 1, 5W 30 with Motorcraft Filter. Great Product!