Originally Posted By: john_pifer
Originally Posted By: Virtus_Probi
I have an oil temp monitor and it once reached just over 230F when it was 96F out, I was climbing a very long and steep hill with two passengers and a loaded hatch, I had the AC blasting to make the two whiny women happy, and I was using 5W30 oil that had a high HTHS for the grade (yes, it did make a noticeable difference in oil temps...M1 5W30 ESP).
I think you'd have to be doing some heavy duty stuff to reach 250F in a typical vehicle. But, you may have some really high air temps, depending upon where you are in CA, so maybe you could do it...
Does yours have the FA20DIT?
I got my oil temp on my 2016 WRX with that engine up into the mid-to-high 240s while playing around with a Nissan GT-R while pulling up a steep mountain section of I-24 near Monteagle, TN. back in June. Air temps in the low 90s and car had a fair amount of camping gear and a bicycle on the rear rack. PPPP 10W-30. I just actually finished a 5500-mile interval on that oil and have sent a sample to OAI. Results should be back this next week.
Hi John, sorry I didn't see your post earlier.
Yes, I have the FA20DIT, but not tuned as nicely as the one in your WRX...you guys get a few extra ponies compared to the FXT.
Yeah, if you were racing a GT-R up a mountainous interstate on a hot day with a loaded car, those oil temps make sense to me! I was on a state highway and was probably maxing out at 70mph in the rare two lane passing sections of that road. I was generally limited to 55-60mph by traffic for the 98% of it that was single lane.
I was surprised that I saw noticeably higher oil temps with M1 5W30 ESP compared to their "standard" product, but it makes sense given that the ESP has a higher viscosity at operating temps. Shannow posted a very interesting article about friction losses vs. grade and the operating state of a vehicle.
Lubrication, Tribology, and Motorsport
I will keep an eye out for your UOA...take care!