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Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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09-13-2016, 12:41 PM | #1 |
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What's a reasonable starting point for fluid change intervals?
What's a reasonable starting point for fluid change intervals, in the number of track days? My car is stock N/A, EHP tires, XP8 / Club Racer, has an oil cooler installed, and "level of abuse" is around 2:16 at Thunderhill Bypass.
Engine - Redline 5W30 Brake/Clutch - Motul RBF600 Transmission/Differential - Motul Gear 300 |
09-13-2016, 01:04 PM | #2 |
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You're using good stuff.
Engine - normal oil change interval, as long as your oil cooler is suffient and keeping your temps under 250F (stock oil temp is read post-cooler, so oil temp peak is higher) Brake fluid - Whenever the feel degrades, or your reservoir is dark Clutch fluid - once a year (use leftover brake fluid from a bleed) Trans/Diff - Every 5 days, or 15k miles, whichever comes first. |
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09-13-2016, 01:25 PM | #3 | |
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Edit: I just realized this is every 5 TRACK days. Makes perfect sense now, move along.
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'19 BMW M2C '22 Subaru WRX ex '15 Scion FR-S Last edited by MarkR171; 09-13-2016 at 02:05 PM. |
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09-13-2016, 01:29 PM | #4 |
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Emm, so I should have changed my tranny fluids twice already this year, this might explain why my first and second dont want to engage right after a track day (as in, right after when driving home).
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09-13-2016, 02:47 PM | #5 |
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These are just ballpark recommendations. Adapt them to your useage, habits, and pace.
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09-13-2016, 03:58 PM | #6 | |
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BTW, I think these initial guidelines would be very useful for noobs in "Quick and dirty guide to track prepping your car". |
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09-13-2016, 07:11 PM | #7 | |
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Used oil analysis is the best way to determine intervals... |
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09-15-2016, 12:05 PM | #8 |
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Recommended Oil
Mike,
I track my car and would love your advise on what oil I should be running. I will purchase from you as well. My car has a Cosworth SC and P&L oil cooler but the oil cooler is not very efficient. My temps are near 300 at the end of my run sessions. Currently running 15w50 Mobile 1 synthetic but it just makes me nervous it's too thick. I'm very aware of the engine failures with our cars and oil temp to be a factor. Please help! Thanks, Mike |
09-15-2016, 12:54 PM | #9 | |
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Running too thick an oil ALSO results in higher temperatures, due to friction. Try a 30 weight first, and then keep an eye on your oil temps, and proceed from there. |
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09-15-2016, 12:56 PM | #10 | |
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09-15-2016, 01:21 PM | #11 | |
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Actually from a senior member from this forum. According to his analysis a forced induction motor under extreme summer conditions being tracked the viscosity of the lower weight oil breaks down causing a loss of pressure then failure. I have been somewhat nervous about it that's why I'm asking. |
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09-15-2016, 01:35 PM | #12 | |
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Thanks Mike! Going on to your site and purchase some goodies today! Thanks Mike Shelton |
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09-15-2016, 05:46 PM | #13 | |
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09-15-2016, 07:51 PM | #14 | |
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http://www.ft86club.com/forums/showthread.php?p=2452143 |
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