monte383sbc

iTrader: (15)

which oil weight should i get for a ''stock clearance'' h/c/i ls1, iam lookin at the valvoline vr1 and Joe Gibbs XP4, people say to run 30w in my set up but that seems a little thick in my opinion, tell me what weight should i run and the car is a drag car that sees allot of street time also, thanks matt

BrianSF-GA

Here is some good information in a past thread of mine. https://ls1tech.com/forums/generatio...te-engine.html I ended up running VR1 30w ... my motor seems to like it, but I have very few miles on it. I also used a Wix filter. It fared well in a filter test I found online. I will look for the test and post the link if you are interested. The Wix had some nice large ports which should be good for flow. I also used a Wix in our '08 G35S as well.

monte383sbc

iTrader: (15)

what bearing clearances are your engine?

BrianSF-GA

Op ... with it being a SDPC 402 crate motor, I have no idea. Since Scoggin Dickey recommends a straight 30W, that is what I went with. I just make sure that the oil has a high ZDDP content. My local O'Reilly's can get the VR1 in a 30W the next morning after I request it.

monte383sbc

iTrader: (15)

anybody else have an opinion?

omar_286961

iTrader: (4)

W30 thats what my buddies put and there cars

Grimes

iTrader: (3)

Mobil1 0w-40. Great oil for stock clearance motors.

crainholio

iTrader: (2)

Or Mobil-1 10W-40 High Mileage synthetic, has extra zinc.

DaveX

5w-30, same as before I did heads/cam. Unless you have a consumption issue or low oil pressure I don't see a need to change, but that's just me.

Zmg00camaross

iTrader: (11)

I use 0w30 amsoil sso. If its a stock clearance motor I would just use what is recommended and stick with a 30 weight.

BrianSF-GA

I don't see the need for a multi-weight oil for a track car unless you plan to drive it in the cold weather. The 0w40 and 10w40 multi-weights are thicker than a straight 30w at operating temperature. I would think a 40w may slightly rob a bit of rwhp. If you are worried about cold startup, then you may want to stick to a multi-weight oil.

harry_ss

Mobil 1

1Ls1

iTrader: (20)

mobil 1 is no bueno, read reviews, valvoline and castrol is better. valvoline says 4x better wear protection then mobil 1 all over internet..........i use 10w30 valvoline