Quote:
Originally Posted by chipmunk
I have not read what others have commented so far, but have you considered an oil cooler instead? There are dozens of pictures here of oil starvation and cavitation. 10W might be too thick for start-up and until fully warmed-up. If I were you, an oil cooler would be the first place to look into.
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I already ordered Rock Oil Carbon 5w30 and scheduled oil change as soon as it arrives. Maybe I panicked a bit but idk. I've seen plenty of really extreme opinions about low tolerances in FA20 and oil flow issues on many various forums, including official Subaru forum. The same concerns which also were mentioned here. And it's kinda not the point. I mean - I wanted better oil to be able to hammer car harder without any compromises and considerations, not to actually drive more carefully due to oil flow concerns, problems with maintaining oil temps above 95 when it was colder outside etc. With 5w30 at least my only concern will be temps, which are easy to understand and control. Unlike oil flow and pressure which I can't control and monitor due to lack of gauges and tools in my brz.
At least I'm gonna have some comparison since I saw temperatures with 0w20, 10w50 and now I'll see how 5w30 behaves. I have all my current rides recorded using OBD and GPS so I'll be able to later compare temperatures. That said today I again reached 122 C (around 250 F) on my way to work and I'm a bit worried about oil flow soo... I guess I don't feel all that comfortable with that 10w50.
If temps will be worse with 5w30 then I'll revisit this topic and wonder what next. For now I guess I know what to do.