I recently did my first track day on a day with 105 degrees temps. I went with Castrol Edge 5w-30 and the car did amazing.
I use Castrol for my 05 320 cdi. It meets the extended service oil spec, but I run it as "regular" oil.
I use for 2 years Castrol 5w30 its perfect after for top up i use Ina (croatian motor oil) and works perfect
My 2006 WRX has 323k on Castrol 10w-30.
I run Castrol GTX conventional oil in my 1972 Chevy C10 (350). I also ran that in a 1976 BMW 2002 I had in the 80s.
I'm a Castrol syntec guy and I like Kirkland oil. So that's what my cars get.
I'm personally running Castrol in the BMW bottle.
Got some numbers for the oil pressure Water temp around 90-95C/194F. Ambient temp 28C/82F Oil 5W30 Castrol Edge LL Hot idle 20 PSI 2000RPM 60 PSI 3-5000RPM 70 PSI Looks okay?
I tried using valvoline, that burned noticeably faster. But castrol high mileage has been pretty good.
Castrol edge is junk.
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