What weight oil do you use?

[s1ngletracker]

or piston slap :O

[Constant_Project21]

I'm switching to rotella, sick of paying up the ass for mobile 1

[dumb_ricer]

Mobil One really isn't what it used to be.

Anyone with a DSM making over 350whp should probably be running 10w40 or higher, or at least that is my opinion.

[Kracka]

Mobil One really isn't what it used to be.
True, ever since they sued Castrol (and lost) a few years ago it hasn't been a REAL 100% synthetic oil even though legally they are allowed to call it 100% synthetic.

[s1ngletracker]

Lame, after running the thicker oil for about 800 miles, my car is now registering knock again :( wtf.

[Kevin 1G Drummer]

Lame, after running the thicker oil for about 800 miles, my car is now registering knock again :( wtf.
It's possible you have a spun bearing.

[SnoEclipse]

I run M1 10w-40 in my 6g76. The Mitsu book says 5w-30 but the heavier oil hushes the lifters nicely.

[s1ngletracker]

It's possible you have a spun bearing.

Very unlikely (doesn't show any signs of it) but i'm clueless. I think I just have a loud engine.

[123abc]

Has anyone used Valvoline VR1 20W50 and how do you like it? I'm thinking of running that for the summer then regular conventional in the winter.


Synthetic oil is just too expensive for me right now and is un-needed.

[SnoEclipse]

Synth only costs more money if you insist on changing it every 3k miles.

If you take it to 10k miles with a filter change at 3500 and 7k miles, your price per mile goes way down.

But this would start the whole oil change interval argument again.