280f oil temp? is that bad? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

alex.s · 07-13-2017, 12:20 PM

Quote:

Originally Posted by JazzleSAURUS

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

Yep. Car is sitting in the garage until the Blackstone kit arrives and I change the oil. Been doing reading. Going with redline 0w20 I think.

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RJasonKlein · 07-13-2017, 03:23 PM

I would think changing to at least a 0W30 synthetic oil for track duty in Southern California makes sense - @CSG Mike, what do you guys run in your cars that see a mix of road and track use?

nikitopo · 07-13-2017, 03:29 PM

0w20 is just for fuel economy. I'm using 5w30 for ordinary road usage. A more appropriate grade for the track is 5w40.

strat61caster · 07-13-2017, 04:42 PM

And how full do you fill it?

Icecreamtruk · 07-13-2017, 04:52 PM

Quote:

Originally Posted by strat61caster

And how full do you fill it?

But, which side of the dipstick you need to look at for that?

CSG Mike · 07-13-2017, 04:56 PM

Quote:

Originally Posted by RJasonKlein

I would think changing to at least a 0W30 synthetic oil for track duty in Southern California makes sense - @CSG Mike, what do you guys run in your cars that see a mix of road and track use?

With proper oil cooling? 0W20. Boosted cars typically run a 30 weight to be safe, but no need in a NA car that has sufficient cooling.

CSG Mike · 07-13-2017, 04:56 PM

Quote:

Originally Posted by nikitopo

0w20 is just for fuel economy. I'm using 5w30 for ordinary road usage. A more appropriate grade for the track is 5w40.

No it's not. Oil weight is based on tolerances.

Capt Spaulding · 07-13-2017, 04:58 PM

Mike, is it based on "tolerances" or "clearances?"

alex.s · 07-13-2017, 05:59 PM

Oil flow rate through a fixed size passage is limited by viscosity. By going with a thicker oil you decrease the flow rate and increase pressure only at the pump which means your oil pump also is more likely to wear. Racing oils have fancy additives. Things like zddp and other shit that's way above my head. You don't just want thicker oil.

CSG Mike · 07-13-2017, 07:57 PM

Quote:

Originally Posted by Capt Spaulding

Mike, is it based on "tolerances" or "clearances?"

Tighter tolerance allows for tighter clearance

OND · 07-13-2017, 08:58 PM

Quote:

Originally Posted by Trueweltall

Mobil 1, API SN 0-20W *Onset Thermal Breakdown @ 265 degrees f*

Dunno man, I bet there are some Exxon engineers who would laugh their asses off if they saw this.

I have seen multiple spun bearing threads on FT86, but none mentioned tracking on 0w20

nikitopo · 07-14-2017, 03:15 AM

Quote:

Originally Posted by OND

Dunno man, I bet there are some Exxon engineers who would laugh their asses off if they saw this.

I have seen multiple spun bearing threads on FT86, but none mentioned tracking on 0w20

Tracking on a 0w20 is a joke, unless you don't care for the engine or you are doing a couple of laps. It is not so much about oil temperatures, but about oil pressure. Engine clearances are fine with a 5w40 oil. For compatibility, you can check here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST110/

and here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST060/

alex.s · 07-14-2017, 03:30 AM

Quote:

Originally Posted by nikitopo

Tracking on a 0w20 is a joke, unless you don't care for the engine or you are doing a couple of laps. It is not so much about oil temperatures, but about oil pressure. Engine clearances are fine with a 5w40 oil. For compatibility, you can check here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST110/

and here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST060/

With an oil cooler?

CSG Mike · 07-14-2017, 04:23 AM

Quote:

Originally Posted by nikitopo

Tracking on a 0w20 is a joke, unless you don't care for the engine or you are doing a couple of laps. It is not so much about oil temperatures, but about oil pressure. Engine clearances are fine with a 5w40 oil. For compatibility, you can check here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST110/

and here:

https://www.sti.jp/parts/subarubrz_z.../ST98050ST060/

Try extended 45 minute sessions in 105F (40C)+ temps.

I've not had any issues yet, and I'm pretty sure my 2017 has more track miles on in than most cars see in their lifetime...

I assume you read Japanese.

Quote:

パフォーマンスパーツのご購入、ご相談はお近くのスバル販売店へ

07-13-2017, 04:58 PM	#22
Capt Spaulding Persona Non Grata Join Date: Nov 2015 Drives: '15 BRZ (WRB) Location: On the Border Posts: 1,881 Thanks: 2,016 Thanked 2,782 Times in 1,201 Posts Mentioned: 10 Post(s)	Mike, is it based on "tolerances" or "clearances?" __________________ Slow is smooth, and smooth is fast

07-13-2017, 05:59 PM	#23
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)	Oil flow rate through a fixed size passage is limited by viscosity. By going with a thicker oil you decrease the flow rate and increase pressure only at the pump which means your oil pump also is more likely to wear. Racing oils have fancy additives. Things like zddp and other shit that's way above my head. You don't just want thicker oil. Last edited by alex.s; 07-13-2017 at 06:37 PM.

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07-13-2017, 03:23 PM	#16
RJasonKlein Senior Member Join Date: Jul 2014 Drives: 2013 Scion FR-S 10 Series Location: Clarendon Hills, IL Posts: 617 Thanks: 442 Thanked 356 Times in 202 Posts Mentioned: 7 Post(s)	I would think changing to at least a 0W30 synthetic oil for track duty in Southern California makes sense - @CSG Mike, what do you guys run in your cars that see a mix of road and track use?

07-13-2017, 03:29 PM	#17
nikitopo Senior Member Join Date: Mar 2014 Drives: '15 BRZ RA Location: Greece Posts: 3,787 Thanks: 2,417 Thanked 1,947 Times in 1,263 Posts Mentioned: 29 Post(s)	0w20 is just for fuel economy. I'm using 5w30 for ordinary road usage. A more appropriate grade for the track is 5w40.

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