Just wondering what it would do if I ran this oil in my truck. My engine knock is absolutely driving me out of my damn mind and I don't know what to do to get rid of it. Will running a thicker oil help any? I have one of those rare diesel gas 6.0's.....it sounds like a ****** diesel at times from the knocking. Makes me sick...

 

I believe the manual says to NOT use that oil because you risk damage to the engine. Only 5w-30 or 10w-30. Correct me if I'm wrong
Are you getting that cold start knock?

 

Cold start, warm start....it doesn't matter. I feel that I have a severe case of it. If you hold it at around 1300rpms, its absolutely sickening sounding. I run 10w40 as it is....
The ONLY solution is to take the motor out, and punch it to a 408 or something similiar. Damn GM and their 02 6.0s! Still runs good like always, just makes an aweful racket.

 

yea my 4.8L makes the noise ALL THE TIME, very annoying and emabarrassing. my old neighbor had a noisy 6.0 and it was louder, so i know your pain.

 

Get your manual and throw it out the window..lol

 

Why? I only use Mobil 1 5w-30 and I have no cold/warm knock issues at all. Never did. I guess they must know something

 

 

Try putting 10w-30 or 5w-30 like the manual says and see what happens.

 

Man I did, I know what ya mean about doin what the manual says but its even louder with the thinner oil. Ive thought about mixing a few quarts of 20/50 with some 5/30. I dunno...then I may just send the motor to Futral.

 

Well damn
Have you run Top Engine Cleaner through it? Maybe it'd be better to send it to Futral