Project WRX

[ScottyB]

I see that I was wrong about the high heat situations but doesn't most wear occur at below operating temperatures like at start up, etc?

yes. the worst is at startup before your oil pump builds pressure and your rotating parts are riding on a leftover oil residue from the last time you shut down. that said you can also do damage at operating temp by overheating the oil, running oil that is very old (a 30 weight sheered down to a 20 weight for example) or running low amounts of oil.

you are probably fine, but if you want check out GC, shell rotella-T 5W-40 and even a thicker weight of penzoil platinum are all good, easily available and span a wide range of prices with GC being most expensive and PP being the cheapest. NASIOC has some used oil analysis on these if you search.