Oil weight

[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.

There are a tremendous amount of studies published online that have been performed on new full syn oils of varying weights and their effect on engine components. Problem is these are not always known and are not easy to read not are they fun to read so they often get passed over.

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