Quote:
Originally Posted by ZDan
Oil analysis has shown that 275F and much higher temps doesn't do anything to the oil at all. Poor oiling delivery does kill engines though, and if you research engine failures with these cars you will find that having an oil cooler or not isn't a factor at all.
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ehh, ive seen people with more time on the track than both of us combined
say they run 0w-20 after countless tests and they all seem to agree that an oil cooler is beneficial if running the car hot for long periods of time.. such as on the track. Oil cooling is only a failure point if its done poorly, would you say that the oem oil/water cooler on the 2nd gens is a failure point? why would subaru design the engine with a better *barely better* and more complex oil cooling system than before if its not beneficial?
All these cars dying from oiling issues that ive seen come from a clogged pickup which = less or no oil delivery. No oil pressure has has a similar but less drastic effect, loss of volume of oil through oil delivery leads to
lol.
My low oil pressure incidents all happened on motul 300v 0w20 which went away after the oil cooler when I was around 300ish whp, new built engine likes motul xcess gen 2 5w40 and ive had the oil cooler on the whole time so I cant say what it would be at in terms of oil pressures. Actually i think im going to give it a try and gather some data for myself but all I can conclusively say with an engineering background is that viscosity is the most important factor for a lubricant and viscosity is affected by temperature, too hot = too thin, too thin means an unhappy engine