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Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ

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Old 03-29-2020, 02:04 PM   #113
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Originally Posted by ZDan View Post
Wow, I never see anything like that on the street...

251F I wouldn't worry. Run 5w30 and viscosity should be similar to 0w20 at 220F.

I currently run 0w40. I've thought about trying 5w30 or 5w40 to see how my pressures react at those higher temps. Maybe, my next oil change I might give a different weight a try.

I definitely agree that a quality oil even at 270 would resist breakdown quite well. It's really the pressures that have me a bit concerned.
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Old 04-07-2020, 04:07 AM   #114
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Originally Posted by ZDan View Post
Wow, I never see anything like that on the street...
If you go up a steep enough road in 2nd and 3rd gear at a spirited pace for 20-30 minutues straight you'll hit those temps with no oil cooler. Brake pads will fade and tires will get greasy just like on a track.
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Old 04-09-2020, 05:25 AM   #115
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I had done some good before and after measurements when installing the Jackson dual radiator water to oil cooler. My finding ls were as follows:

-with regular 0-20 oil, driving at high rpm (say at 4000rpm or above) on the highway for 20mins or more can really crank out temps to 250F and up to 280F. I found its more a factor of rpm rather than speed.

-my recommendation would be for anyone NA Or FI that likes to drive at high rpm for extended periods to at Least go to a quality 5-40 oil. i would strongly recommend an oil cooler for Someone driving extensively at 5000rpm or more, such as on track.

-for my case, the dual jackson rad/oil cooler was very effective for an all year round solution , and kept temps below 240F (with 5-40 oil) even in high demand situations , while helping warming oil up in the winter time as well.

Link to my measurements with and without cooler with high rpm (low speed) driving on the highway:

Last edited by falcon_wizard; 04-09-2020 at 06:44 AM. Reason: Added link to thread
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