280f oil temp? is that bad? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

alex.s · 07-13-2017, 01:25 AM

how long is too long to run hard at 270-280f oil temp? ambient temp was 110f

i ordered an oil cooler but i'm just wondering how degraded my oil would be after 6x 20min sessions alternating between hard and easy (260f when going easy)... completely stock engine

Trueweltall · 07-13-2017, 02:18 AM

100-169F Warm Up Phase, high oil pressures
170-189F Near Operating temps, oil pressures still higher
190-225F Normal Operating Range, oil pressures normalize
225-245F Middle End of operating range for track use, 5% drop in oil pressures
245-255F Upper End of operating ranges for track use, 10% further drop in pressures on 0w20
255-265F Red Zone of operating ranges for track zone, 0w20 starts to thin, oil pressures drop to questionable range.
265F+ Playing with fire on 0w20

Can't remember where I found this or else I would credit them.

Edit: Also it depends on what brand of oil you're running before it starts to break down.

Pennzoil Ultra, API SM 0-20W *Onset Thermal Breakdown @ 280f degrees f*
Mobil 1, API SN 0-20W *Onset Thermal Breakdown @ 265 degrees f*
Castrol Edge w/ Titanium API SM 0-20W *Onset Thermal Breakdown @ 280 degrees f*

CSG Mike · 07-13-2017, 02:30 AM

Quote:

Originally Posted by alex.s

how long is too long to run hard at 270-280f oil temp? ambient temp was 110f

i ordered an oil cooler but i'm just wondering how degraded my oil would be after 6x 20min sessions alternating between hard and easy (260f when going easy)... completely stock engine

Playing with fire there. Which oil cooler did you order?

alex.s · 07-13-2017, 02:30 AM

Well shit.

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alex.s · 07-13-2017, 03:22 AM

Quote:

Originally Posted by CSG Mike

Playing with fire there. Which oil cooler did you order?

Jackson racing

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Chronology · 07-13-2017, 03:44 AM

Quote:

Originally Posted by Trueweltall

100-169F Warm Up Phase, high oil pressures
170-189F Near Operating temps, oil pressures still higher
190-225F Normal Operating Range, oil pressures normalize
225-245F Middle End of operating range for track use, 5% drop in oil pressures
245-255F Upper End of operating ranges for track use, 10% further drop in pressures on 0w20
255-265F Red Zone of operating ranges for track zone, 0w20 starts to thin, oil pressures drop to questionable range.
265F+ Playing with fire on 0w20

Can't remember where I found this or else I would credit them.

Edit: Also it depends on what brand of oil you're running before it starts to break down.

Pennzoil Ultra, API SM 0-20W *Onset Thermal Breakdown @ 280f degrees f*
Mobil 1, API SN 0-20W *Onset Thermal Breakdown @ 265 degrees f*
Castrol Edge w/ Titanium API SM 0-20W *Onset Thermal Breakdown @ 280 degrees f*

Are these considered the Flash or Fire point? Sorry just trying to compare to the oil I have.

CSG Mike · 07-13-2017, 04:21 AM

Quote:

Originally Posted by Chronology

Are these considered the Flash or Fire point? Sorry just trying to compare to the oil I have.

That's when the oil starts chemically degrading and is no longer lubricating as intended.

Trueweltall · 07-13-2017, 09:03 AM

Quote:

Originally Posted by Chronology

Are these considered the Flash or Fire point? Sorry just trying to compare to the oil I have.

If I recall correctly these were the temperatures at which they started to vaporize/smoke.

radroach · 07-13-2017, 10:36 AM

I'd just skip doing track days at 110* if its that severe on your engine.

Clipdat · 07-13-2017, 12:29 PM

What would be the long term effects/damage to the engine from high oil temps like the OP experienced?

When I first got my '13 I took it out for 5 or more super aggressive canyon carving sessions that lasted an hour+ each, on the factory fill, where ambient temperatures were 95-105f. I did not have a way to monitor oil temperature at the time, but I'm sure it was easily in the 240-270 range if not higher.

alex.s · 07-13-2017, 12:39 PM

Quote:

Originally Posted by Clipdat

What would be the long term effects/damage to the engine from high oil temps like the OP experienced?

When I first got my '13 I took it out for 5 or more super aggressive canyon carving sessions that lasted an hour+ each, on the factory fill, where ambient temperatures were 95-105f. I did not have a way to monitor oil temperature at the time, but I'm sure it was easily in the 240-270 range if not higher.

Blown crank bearings.

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Clipdat · 07-13-2017, 12:40 PM

And how would I know if I had that happen? What would I be looking for as far as symptoms?

Quote:

Originally Posted by alex.s

Blown crank bearings.

strat61caster · 07-13-2017, 01:01 PM

Quote:

Originally Posted by Clipdat

And how would I know if I had that happen? What would I be looking for as far as symptoms?

Engine knocking, like you're afraid to run the engine because of how bad it sounds and significant metal in the oil/filter.

It's been years, your engine is probably fine. I've done 5x track days without an oil cooler and nothing showed up in my oil analysis that would indicate improper wear.

JazzleSAURUS · 07-13-2017, 01:05 PM

I'd do an oil change before putting any unnecessary miles on your car.

07-13-2017, 01:25 AM	#1
alex.s Senior Member Join Date: Jul 2016 Drives: '17 BRZ Premium. Totaled: '16 FRS Location: socal Posts: 121 Thanks: 37 Thanked 52 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	280f oil temp? is that bad? how long is too long to run hard at 270-280f oil temp? ambient temp was 110f i ordered an oil cooler but i'm just wondering how degraded my oil would be after 6x 20min sessions alternating between hard and easy (260f when going easy)... completely stock engine

07-13-2017, 01:05 PM	#14
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 560 Times in 353 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	I'd do an oil change before putting any unnecessary miles on your car. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

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07-13-2017, 02:18 AM	#2
Trueweltall Senior Member Join Date: Feb 2016 Drives: 2016 Subaru BRZ Location: Florida Posts: 394 Thanks: 91 Thanked 195 Times in 115 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	100-169F Warm Up Phase, high oil pressures 170-189F Near Operating temps, oil pressures still higher 190-225F Normal Operating Range, oil pressures normalize 225-245F Middle End of operating range for track use, 5% drop in oil pressures 245-255F Upper End of operating ranges for track use, 10% further drop in pressures on 0w20 255-265F Red Zone of operating ranges for track zone, 0w20 starts to thin, oil pressures drop to questionable range. 265F+ Playing with fire on 0w20 Can't remember where I found this or else I would credit them. Edit: Also it depends on what brand of oil you're running before it starts to break down. Pennzoil Ultra, API SM 0-20W Onset Thermal Breakdown @ 280f degrees f Mobil 1, API SN 0-20W Onset Thermal Breakdown @ 265 degrees f Castrol Edge w/ Titanium API SM 0-20W Onset Thermal Breakdown @ 280 degrees f

07-13-2017, 02:30 AM	#4
alex.s Senior Member Join Date: Jul 2016 Drives: '17 BRZ Premium. Totaled: '16 FRS Location: socal Posts: 121 Thanks: 37 Thanked 52 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Well shit. Sent from my Nexus 5X using Tapatalk

07-13-2017, 10:36 AM	#9
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	I'd just skip doing track days at 110* if its that severe on your engine.

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