Quote:
Originally Posted by ajc209
The manual states 0W20 or 5W30 for hot condition or trackdays.
Since my oil cooler doesnt let oil above 110C on track I actuality switched back to 0W20 as my oil pressure was too high with 5W30.
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What pressure were you seeing with 5w30 that you feel is too high?
The manual is also referring to a stock engine. Forced induction greatly increases torque, which greatly increases pressure on rod bearings. Our rod bearings are already unusually narrow, and the center pair share an oil journal. This engine was not designed for the torque loads of forced induction. That is why they have not added it despite all the demand. Your days running 0w or 5w are on borrowed time IMO. I would advise shim the pressure release valve and run 10w or higher on boosted FA20s.