Never tried Royal Purple, but I only ever use the Subaru Black oil filters, or the Blitz Racing oil filters. For oil tho, I’m gonna be putting in HKS Super Oil Premium 10W-40 due to the phenomenal HTHS capabilities compared to Motul and VR-1
been using Castrol edge 5w-30 for the past 5 years My WRX engine still feels responsive but i know 5-40w is good overhead for high temps
It's perfectly fine for the WRX, and it's what I use in mine, as well as its two previous owners. My car's maintenance records include two reports from Blackstone Labs detailing their examination of the Rotella T6 5W-40 oil and according to those the engine has worn very well on that oil
Just finally did my yearly oil change on my old faithful 04 wrx 177k miles last week. Put 14,370 miles on the signature series 0w40. Oil sample got in today. 31% oil life. Very little brass, relative clean oil. Waiting for my rod bearings to die but if this keeps up they might last a bit longer! Keep in mind I was using amsoils 25k mile oil filter aswell.
Write your review about engine oil
Help others - share your experience with this part.
