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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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07-07-2020, 12:15 PM | #1 |
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2020 BRZ tS Fluid Question
Hey all,
I was wondering, given the car is a 2020 BRZ tS MT - do you think the stock transmission and differential (LSD) fluid is of better stock than the historical guidance on MT13-17 stock fluids on the forum? I was looking at motul 300 for trans and 300LS for the differential after break-in but the stock fluid in a tS cant be that bad can it? So far my only mods have been drop in filter (Green Filter) and MTEC clutch spring. Thanks |
07-07-2020, 02:26 PM | #2 |
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I reckon the OEM fluid is just fine for average driving.
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07-08-2020, 12:00 PM | #3 |
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I just got a TS myself and will be keeping the stock fluid until the first maintenance. I will then be upgrading to Amsoil. Motul is not readily available here in Canada. The stock fluid is fine for some time.
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07-08-2020, 12:02 PM | #4 |
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It's fine.
If you're changing there are some fluids people prefer over OEM. But oem is fine.
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07-08-2020, 01:34 PM | #5 | |
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Quote:
Agreed. I will however do the first oil change right at 1,000 miles next week on my 2020 tS. |
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07-08-2020, 02:38 PM | #6 |
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Last I checked, the LSD in all of these cars is Torsen. Meaning there are no clutch discs in there to warrant LSD Gear Oil. Most all 75w90 oil will be just fine.
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07-08-2020, 03:19 PM | #7 |
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Understood, sounds good.
I just did the Clutch Pedal Spring swap out for the MT and holy hell did it make a massive difference. I can actually feel the clutch grab point now lol... I didnt go with the MTEC because $30 for a single spring is extortion. So I ordered a pack of equivalents that were $10 and came with 6 springs...just in case haha. If anyone is interested, I got the idea from a set of youtube comments but ultimately got the 49 lb/in one below. The MTEC 63 Lbs/inch was above what a mechanical engineer said 30-50lb/in range on the spring is optimal. The stock spring is 150lb/in....so you can see why if your shifting (especially idle 1st gear clutch grab and 2nd gear jerk). 49 lb/in 2": https://www.mcmaster.com/9657K405/ If you want the generic MTEC equivalent though; 57lb/in 1.75": https://www.mcmaster.com/9657K379/ Last edited by Alistia; 07-08-2020 at 03:34 PM. |
07-08-2020, 05:03 PM | #8 |
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Oem gear fluid looked perfect at 40k. So any gear oil brand 75w90 will work.
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07-15-2020, 03:51 AM | #9 |
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Curious if anyone swapping manual trans fluid with Subaru OEM is able to find GL3/4 spec fluid? Subaru only sells GL5?
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07-15-2020, 08:13 PM | #10 |
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Go to Toyota and ask for LV 75W transmission line for an FRS/86. It's not cheap, but it's what Toyota recommends, and it's GL4, not 5. And it's a Toyota transmission, after all...
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