Preferred Oil

[Clar2478]

I'm just wondering what everyone else is using as far as brand/type of oil.

[99prixgt]

Mobile 1. When I tore down my motor it spoke for itself.

[blueguy]

Yup...Mobil 1...and for the crappy DD...Slow Rielly's dino oil and poo poo $1 filter

[Scimmia]

I wasn't happy with Mobil1 in my car, so now I'm using Syntec 0W-30.

[2000GTP]

ROYAL PURPLE FTMFW!!!! i love it, its the only thing that me and my brother will ever put in our cars

[stlmo_gtp]

ROYAL PURPLE FTMFW!!!! i love it, its the only thing that me and my brother will ever put in our cars

x2 Royal Purple, it's expensive **** tho around here i think it is $12 a quart

[2000GTP]

x2 Royal Purple, it's expensive **** tho around here i think it is $12 a quart

holy **** i think where i get it its like 8 or 9 a quart. its worth it though. amsoil is also really good, i just go for royal purple though

[GPSims39]

I prefer Valvoline, i know my car is not S/C but tis about the oil, I use 10/40 Synth Blend High Mileage Laced with Lucas Synthetic stabilizer

[boosting98]

Mobil 1!

[TheOtherNick]

Amsoil

[04CompG]

Amsoil

[Bio248]

whatever is cheapest, which is usually advance auto oil.

[GTPJOE90]

i like Q horsepower or penzoil platnium full syenthitic.

[05SS45]

Royal Purple FTW!!!

[2000GTP]

Royal Purple FTW!!!

DAMN STRAIGHT! like gold in a bottle, just purple instead!

[blueguy]

pennzoil

Have fun rebuilding your motor.

[JJ91284]

Have fun rebuilding your motor.

Actually penzoil synthetic oil is some of the best bang for the buck when it comes to synthetic oil. (read about it on bob the oil guy forum)

I won't run Royal purple because it contains moly, which is comming found in greases. When used in high heat environments, the moly can become seperated from the rest of the oil and form into graphite which will cause engine damage. This is pretty common in diesel engine and some manufacturers (cummins if I recall) says not to use it.

I personally run Mobile 1 Extended Performance oil (full synthetic) with the extended blazer mobil 1 filter. I usually run 7,500 or so and then do an oil change. I've had oil analysis done by black labs and the oil is in great shape and they recommended going to 10k miles.

Amsoil is also an amazing oil/all their products and I wouldn't hesitate to use them. I use their trans fluid in my gtp which hopefully along with my diff squirter will protect my torsen diff.

[Clar2478]

how many quarts does the 3800 take?

[99prixgt]

4.5 quarts

[Iron Indian]

I run Valvoline Conventional 10w30 in both GTPs and I change oil frequently....