Oil weight

[suprf1y]

Originally Posted by tmontague

5w30 full syn during the summer at the track (260 degree oil temps and pressure is fine) and I run 0w30 full syn during the winter.

The problem on forums when discussing oil now a days is that there are many people who have been around cars for a couple decades or more but oil technology has come leaps and bounds in the past 10 years. This leads to much advice not necessarily being correct in today's world although it was smart not a long while ago.

Case in point - thicker oils offer more protection. Not necessarily true anymore although this would have been the case back when single weight and dyno oils were the main stay.

Take home point - run a UOA if you want to know how your oil stacks up. This is how I know I can run 20,000km oci's on my oil with track use

I call that the small block Chevy factor. I thought that the access to information that the internet would bring would ferret that out but it's spread to the internet from the magazines and actually become much much worse.

So tell me more about your 20k oci's. I've done it in the past despite predictions of doom and gloom but have no personal experience with these motors