Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Safe oil temps for daily driving and spirited driving off the track?

OwlDance · 06-11-2019, 01:51 PM

I think there's a very good reason why a lot of track cars often aim for under 225f for oil temperatures when considering cooling options. Temperature is only 1/10th the picture, pressure is what's actually important. Most cars will be hard pressed to actually bring oil to breakdown temperatures, but by that point one is typically already employing oil cooling so even if the pressure isn't good, it'd be almost impossible to "cook" the oil. But it's the lubrication and pressure that matters and balancing that with oil weight selection, alongside flow.

If the driver's manual recommends ~10psiX1K RPM, then I would aim for that, and even the better case scenario readings are pulling readings below that (IE, 60PSI at 7K RPM).

Here's just some threads that discuss oiling and pressure...

https://www.ft86club.com/forums/showthread.php?t=63723
http://www.ft86club.com/forums/showthread.php?t=134863
https://www.ft86club.com/forums/showthread.php?t=131419
http://www.ft86club.com/forums/showthread.php?t=76760 <-- the most clearcut one IMHO, for what it's worth

And while these are extreme examples of usage I think they, alongside the numerous anectdotes everywhere on the forums or otherwise paint a clear picture to warrant a more proactive approach to cooling.

06-11-2019, 01:51 PM	#12
OwlDance Senior Member Join Date: Sep 2018 Drives: Halo 86, '19 Location: NY Posts: 121 Thanks: 88 Thanked 95 Times in 48 Posts Mentioned: 3 Post(s)	I think there's a very good reason why a lot of track cars often aim for under 225f for oil temperatures when considering cooling options. Temperature is only 1/10th the picture, pressure is what's actually important. Most cars will be hard pressed to actually bring oil to breakdown temperatures, but by that point one is typically already employing oil cooling so even if the pressure isn't good, it'd be almost impossible to "cook" the oil. But it's the lubrication and pressure that matters and balancing that with oil weight selection, alongside flow. If the driver's manual recommends ~10psiX1K RPM, then I would aim for that, and even the better case scenario readings are pulling readings below that (IE, 60PSI at 7K RPM). Here's just some threads that discuss oiling and pressure... https://www.ft86club.com/forums/showthread.php?t=63723 http://www.ft86club.com/forums/showthread.php?t=134863 https://www.ft86club.com/forums/showthread.php?t=131419 http://www.ft86club.com/forums/showthread.php?t=76760 <-- the most clearcut one IMHO, for what it's worth And while these are extreme examples of usage I think they, alongside the numerous anectdotes everywhere on the forums or otherwise paint a clear picture to warrant a more proactive approach to cooling.