Looking for Oil recommendations...

[bobcowan]

Originally Posted by genolan

OK so if 20/50 is the wrong oil what is the correct oil for a 408 stroker with 4300 miles. It's only had 20/50 since new.

Any good 5W-30 dino oil will work just fine. I happen to like Castrol GTX, but there are other good ones on the market. If you drive more than about 10K miles a year, a true synthetic will allow you to change the oil less often.

Originally Posted by saturnkk

So is 20-50 okay for a 45 year old Chevy 327 then? I had heard that as an engine ages, with niles, it is better to go with a "thicker oil" to make up for the wear...

Maybe. It depends on the condition of the engine. If the engine 45 years old, but not driven much and is well maintained, then - once again - a good 5W-30 will keep the engine running strong and efficiently.

You need enough viscosity to maintain oil pressure and no more

Originally Posted by PhoneGuy

Thank you Bob Cowan for the very nice and simple write up. I now understand a few things a little more - although I am still changing the oil on my Harley every 2,500 miles. I know it is over kill but just makes me feel good to change it every year.

Sometime you just have to do whatever helps you sleep at night.