Track Day Excessive Oil Temp for factory recommended 0w-20 persists

[Ohio Enthusiast]

But cars don't care about wet bulb temperature, as they don't rely on evaporative cooling (well, at least the vast majority of cars don't). Cars use simple heat exchangers and these are governed by temperature differential and medium flow rate (air in our case), regardless of humidity.

[Blighty]

Originally Posted by Ohio Enthusiast

But cars don't care about wet bulb temperature, as they don't rely on evaporative cooling (well, at least the vast majority of cars don't). Cars use simple heat exchangers and these are governed by temperature differential and medium flow rate (air in our case), regardless of humidity.

Ahh yes - of course they dont.

[Tokay444]

Originally Posted by s30series

If I changed my oil every two track days I wouldn't worry about 270degree oil as well.

Some of us use the BRZ as a track car AND a daily driver and that just isn't practical. Millers Nanodrive is not cheap oil

I don't know what a "track season" is. I go every chance I can get throughout the year.

You know whats nice? Boosting the shit out of my outback over and over while laughing in the dadwagon and seeing oil temp get up to mid 230s....then lay off for a second and instantly goes back down....cause Millers isn't cheap for that sucker either

I track and daily and change my oil after every track day.

[Tokay444]

Thinking an oil cooler prolongs the life of the oil in severe usage scenarios is laughable. I’d still do the oil change with or without the cooler.

[Frost]

Originally Posted by Tokay444

Thinking an oil cooler prolongs the life of the oil in severe usage scenarios is laughable. I’d still do the oil change with or without the cooler.

Yep. Abuse is still abuse. kW of heat generated is still being passed through the oil and passed out to atmo. Same path, same abuse.

[DocWalt]

Originally Posted by Tokay444

I track and daily and change my oil after every track day.

That is extremely excessive.

I don't disagree with ZDan on the fact that good oil can handle heat... If you're changing oil that often just because of heat you're doing it wrong.


I tracked my GT350 a bunch and it was at ~285F all day long for 20+ minute sessions. I wasn't worried about it because it was using 5w50 oil.

Stock 0w20 isn't going to work on the twins for heavy track use.

[Tokay444]

Originally Posted by DocWalt

That is extremely excessive.

I don't disagree with ZDan on the fact that good oil can handle heat... If you're changing oil that often just because of heat you're doing it wrong.


I tracked my GT350 a bunch and it was at ~285F all day long for 20+ minute sessions. I wasn't worried about it because it was using 5w50 oil.

Stock 0w20 isn't going to work on the twins for heavy track use.

I'm NOT changing it just because of heat.

[timurrrr]

Originally Posted by Tokay444

Thinking an oil cooler prolongs the life of the oil in severe usage scenarios is laughable. I’d still do the oil change with or without the cooler.

Well, my oil would get pretty dark after one track day without a cooler back when I was a beginner.
15+ track days of experience later, I have an oil cooler and the oil is mostly clear when I change it once every 3 track days.

[Tokay444]

Oh yeah?
Is that supposed to be some sort of empirical data point?

[Kona61]

Originally Posted by Tokay444

Oh yeah?
Is that supposed to be some sort of empirical data point?

I mean, color is a data point… For example, you can clearly tell burnt ATF vs new simply by the color, or old oil vs new.

[zeroomega]

Originally Posted by timurrrr

Well, my oil would get pretty dark after one track day without a cooler back when I was a beginner.
15+ track days of experience later, I have an oil cooler and the oil is mostly clear when I change it once every 3 track days.

I feel oil change per 3 track days is a bit too frequent. It won't do any harm but it bumps run cost and nuances a bit. I have some used oil analysis reports from Blackstone Lab after tracking 5 track days with 5w30 oil with oil cooler and I can share to you if you are interested. All the metrics from the reports were pretty good. Blackstone lab folks suggested me to run the oil a bit longer, which I did and I am waiting for my latest report from them.

[Blighty]

If you can afford it, and are happy to do it, then replacing oil after every track day would be ideal you would imagine?

[timurrrr]

Originally Posted by zeroomega

I feel oil change per 3 track days is a bit too frequent.

Yup, I'm aware that it's most likely too frequent.

It's just that it aligned well with my recent schedule of track days, autox'es and maintenance to do oil these changes "while at it".
I figured I'd rather do an extra change to be on the safer side.

Not scientific by any means

[TommyW]

Originally Posted by timurrrr

Yup, I'm aware that it's most likely too frequent.

It's just that it aligned well with my recent schedule of track days, autox'es and maintenance to do oil these changes "while at it".
I figured I'd rather do an extra change to be on the safer side.

Not scientific by any means

But reeks of common sense.