Originally Posted By: bluesubie
Originally Posted By: stevo585
Originally Posted By: CT8
At least 0W-40 qnd get a pyrometer to let you see the turbo temps and let the turbo cool to around 300*f before shut down. I bet the torque increase makes the BRZ super.
You think a 0w40 huh?.. that's way thicker than OEM spec. The '15+ WRX which uses the same engine (except lower comp pistons) specs 5w30 which is why I went with that. But yes the extra torque is nice it really is a top end rocket! The car has 255 dur. cams stock more of a revvy top end motor. Its sitting around 285whp and 230wtq on a low boost conservative tune to save the clutch.
The whole pyrometer seems really inconvenient would like to avoid that. I do let it idle after pulls but just driving to work and putting around town I don't.
Subaru Japan allows 5W40 in a
stock BRZ so no question an xW40 would be a good choice for you to run. The HTHS of Red Line 5W30 is 3.7 and the HTHS of M1 0W-0 is 3.6 and I would be comfortable running either (or any other ACEA A3/B4 oil).
If you intend to track it, definitely go with an oil cooler such as a Forester XT OEM oil cooler. The operating viscosity of the Mobil1 5W30 that you're running is very likely a 20 grade.
Did not know that, quite a spread from a 0w-20 usdm to a 5w40 jdm spec. I'll probably run a either M1 HM 10W30 or M1 0-40. Something ACEA A3/B3 as others have suggested seems like that spec is for DIT engines.
Not sure I'm sold the redline is worth 2X the cost. I'm only going to do 5k OCI max anyways. Probably pick an above and do a UOA at 3k. And of course invest in a Forester XT OEM oil cooler I see they are only about $250 for the parts.