Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Does 5W-30 helps to protect the engine?

7 skulls · 10-17-2018, 09:11 AM

Hey OP
I'm in Newfoundland, run 0W-20, have the subaru oil warmer/cooler installed as well as oil temp. / oil pressure gauges. The car is at 33 000km now and I have had the 0w-20 tested (Blackstone labs) at every oil change. Always comes back with excellent results. Drive your car normally, you wont have any problem.
However, extended high rpm running (above 4000rpm) in the summer heat will quickly drive oil temps into the 110 C plus range and oil pressure at redline down into the 40 psi range. Lots of discussion on here regarding this. When I see these numbers, I back off. Basically, if your not tracking or auditioning for Fast/Furious 15, 0w-20 is fine.

10-17-2018, 09:11 AM	#10
7 skulls Senior Member Join Date: Jul 2015 Drives: 2014 scion frs Location: Newfoundland Posts: 241 Thanks: 283 Thanked 247 Times in 122 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Hey OP I'm in Newfoundland, run 0W-20, have the subaru oil warmer/cooler installed as well as oil temp. / oil pressure gauges. The car is at 33 000km now and I have had the 0w-20 tested (Blackstone labs) at every oil change. Always comes back with excellent results. Drive your car normally, you wont have any problem. However, extended high rpm running (above 4000rpm) in the summer heat will quickly drive oil temps into the 110 C plus range and oil pressure at redline down into the 40 psi range. Lots of discussion on here regarding this. When I see these numbers, I back off. Basically, if your not tracking or auditioning for Fast/Furious 15, 0w-20 is fine.