- Joined
- June 17, 2004
- Messages
- 24,273
- Reaction score
- 4,745
- City, State
- Knoxville, TN
- Year, Model & Trim Level
- 98 Limited AWD 302
never do 20w50, to heavy for this engine, the pressure will drop more or not even rise with that oil on this engine...
Complete bull, go back to school. The world was not born the day before you got out of school. Oil is not some magic thing which boils or does any other wild thing just because some book/manual/service writer says it isn't approved.
Stop spreading myths. Oil is great now compared to what it was 30 years ago. All oils are better, and engines are still built with the same bearings and clearances that they were then.
30 years ago 10/40 and 20/50 oils were commonly recommended for countless engines. They will perform no less well now because some fool wrote an owner's manual specifying 0/20 or 10/30 etc.
I did not suggest putting a 20/50 oil in the engine permanently. Do it to help diagnose what the noise is. The worst thing that can possibly happen is an immeasurable drop in fuel economy. Do what you want, I try to help but too many people who cannot do anything but worship a manual keep chiming in. Good luck,