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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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06-16-2021, 10:14 AM | #15 |
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IIRC the coolant circulation system eventually bleeds itself via the reservoir but to quickly relieve air there is a bleed valve close to the center of the engine firewall - however I don't remember the procedure off hand.
edit: @RToyo86 beat me to it |
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06-16-2021, 10:31 AM | #16 | ||
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06-16-2021, 10:38 AM | #17 |
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I will be doing some tracking this season and will be curious to see where maxes out. I hit 265f before backing off multiple times.
A friend who ran the same forester OC on the same track has mentioned prior to install he was able to hit 290f on our local track with 0w-20 while not paying attention. After the cooler his temps maxed out at 260f. 260f is still not ideal but I'll take a steady 260f over running hotter. That and potential of warming up faster. I have been watching oil temps near daily for the last week and a half with the cooler from cold start to 170F oil temps. During summer temperatures I don't see much of a difference warming the oil. Coolant temps are about 30f ahead of oil temps which is in-line with no cooler from my experience. Winter will be entirely different and I expect to see noticable difference there. |
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06-16-2021, 10:43 AM | #18 |
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Thanks everyone!
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06-16-2021, 12:03 PM | #19 |
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I am not particularly fond of that data as I don't see an equal PSI/rpm correlation on my own car. Even running 0-20, I am pretty sure the oil pump cavitates. I build oil pressure till about 5800RPM and then it drops. I bought sensors for logging oil pressure and temp, waiting on my RPM reference sensor. I have a tool that plugs into these and will log the data.
FWIW I have been tracking my car on 0-20W with an oil cooler for 5-6 years. I regularly see oil temps in the 240-260F range. Buy good oil if you are hard on your car.
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06-16-2021, 12:10 PM | #20 | |
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06-16-2021, 12:24 PM | #21 | |
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Logging I will be using Innovate motorsports MTX gauges linked to an SSI-4 for RPM ref and going to a PL-1 datalogger.
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06-17-2021, 07:37 AM | #22 | |||
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https://www.ft86club.com/forums/showthread.php?t=134863 Quote:
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06-17-2021, 11:11 AM | #23 | |
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My recommendation would be that anyone who "spiritedly" drives 2nd/3rd gear mountain passes should watch their oil temps and evaluate. Yeah I think good oil is essential. I used to pay attention to kV at 100 C, but HTHS viscosity (measured at 150 C) is probably the number to focus on for track use, particularly if running without an oil cooler and seeing high oil temps 260-290 F).
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06-17-2021, 11:30 AM | #24 | |
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I still plan on testing before/after oil cooler temps/pressure and with and without oil cooler with 0-20 vs 5-30. I need to buy another gauge and the PL-1 will log it all. I just went a little deep in my parts budget this year so I am trying not to spend too much more money or I am not going to get to drive as much. The one part I am missing is showing up today so I might be able to get it roughly installed today and log the car on Saturday at the track.
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06-18-2021, 02:01 AM | #25 | |
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From what I'm seeing from different manuals in different regions our cars would accept down to API SL, which most A3/B4s are in that category (many opinions out there say to just ignore API ratings though) |
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06-18-2021, 11:15 AM | #26 | |
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06-18-2021, 11:23 AM | #27 | |
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06-18-2021, 11:37 AM | #28 | |
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EDIT: This is actually why I have been most interested in following ZDan's case for some time now. Though it may be just luck, it is interesting to know that his car has held up so well over all the tracking he has done at high RPM's, probably with a lot of oil pressure creeping toward the pressures you mention. |
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