I've got a Stillen Stage 2 S/C kit in currently, soon to be stage 4 once I can get the parts in. I saw another thread about motor oil, and realized I don't know why it's something I never thought of changing when I went F/I. I'm still currently running Amsoil 5w-30 synthetic. Is that gonna be a problem?

I'm not looking for a discussion of different motor oil brands so much, but rather a discussion of what weights I should go with. What viscosity for cold and operating temps?

?w??

 

i run 5w30 mobil1 in the winter and 10w30 mobil1 the rest of the year.

 

Motul is supposed to be formulated for high hp or FI engines. It's a tier 1 synthetic oil. That's what I'll be using.

 

I use this http://www.mobil.com/USA-English/Lub...ruck_5W-40.asp

It's still a Group IV and about the toughest stuff out there for boosted applications.

 

I've read that Amsoil series 2000 has one of the highest film strengths on the market. Plus an excellent detergent additive package. I think you're okay. I'm sure what ballisticus suggests is good to.

As far as cold temps. It almost never gets cold enough to stress Amsoil. Synthetics are superior for flowing while cold.

 

M1 15w50.

 

He's correct, stick with what your using Amsoil is great stuff!