Transmission/Differential oil change interval daily + light track use - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

GCFSA · 03-10-2020, 09:45 PM

Hey everyone, I've tried searching the forums but only seem to find answers for either end of the spectrum.

I know for a daily changing transmission/differential oils every ~48000km (30k miles) is good enough and if it's a track car once at the start of season but was wondering if I should change my oil more frequently if I daily it and only do about 2-3 track days per year?

Thanks!
GCFSA

Mr.ac · 03-10-2020, 10:05 PM

Everything you need to know is on the time table in your manual.
Would it hurt it to do it more often? Nope. Would it be beneficial to? Eh who cares?
Will it make you feel happy? Yes.

In other words, change it when you feel like it.

why? · 03-11-2020, 07:20 AM

Might as well change it all, including brake fluid, before your first race every year. Peace of mind might be improved more than anything else, but why not?

8inchAzN · 03-11-2020, 10:28 AM

Quote:

Originally Posted by Mr.ac

Everything you need to know is on the time table in your manual.

Is it me or does it not say when to replace your manual trans fluid/rear diff oil? At least not for the first 90k miles?

https://www.ft86club.com/forums/showthread.php?t=98730

Mr.ac · 03-11-2020, 04:25 PM

Quote:

Originally Posted by 8inchAzN

Is it me or does it not say when to replace your manual trans fluid/rear diff oil? At least not for the first 90k miles?

https://www.ft86club.com/forums/showthread.php?t=98730

It says to inspect it. If need be replace. Pretty much it's up to you.
I think you read the AT fluid line.

Jyn · 03-11-2020, 05:15 PM

Quote:

Originally Posted by GCFSA

Hey everyone, I've tried searching the forums but only seem to find answers for either end of the spectrum.

I know for a daily changing transmission/differential oils every ~48000km (30k miles) is good enough and if it's a track car once at the start of season but was wondering if I should change my oil more frequently if I daily it and only do about 2-3 track days per year?

Thanks!
GCFSA

How much mileage do you put on a year? What fluids are you using?

I normally recommend every 2 years for most of my folks that do occasional track/spirited driving along with daily driving.

I change mine every year after a season of track.

This is with Motul Gear300 75w90 in both the trans and diff. YMMV when using other fluids.

86MLR · 03-11-2020, 05:44 PM

I do my gearbox and diff yearly.

More due the cars maintenance being a hobby thing now since I haven't had a dedicated club car for a few years.

Meh, oil is cheap enough.

Well....except for my old R33 Skyline, I would change the gearbox oil when I changed the gearbox, which was roughly every 6 months.

03-10-2020, 09:45 PM	#1
GCFSA Member Join Date: Apr 2018 Drives: Toyota 86 Location: Melbourne Posts: 16 Thanks: 3 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Transmission/Differential oil change interval daily + light track use Hey everyone, I've tried searching the forums but only seem to find answers for either end of the spectrum. I know for a daily changing transmission/differential oils every ~48000km (30k miles) is good enough and if it's a track car once at the start of season but was wondering if I should change my oil more frequently if I daily it and only do about 2-3 track days per year? Thanks! GCFSA

03-10-2020, 10:05 PM	#2
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,369 Thanks: 709 Thanked 1,558 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	Everything you need to know is on the time table in your manual. Would it hurt it to do it more often? Nope. Would it be beneficial to? Eh who cares? Will it make you feel happy? Yes. In other words, change it when you feel like it. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

03-11-2020, 05:44 PM	#7
86MLR Senior Member Join Date: Aug 2018 Drives: 2002 VX Commodore SS LS1 Auto Location: Sydney Posts: 2,203 Thanks: 500 Thanked 2,185 Times in 1,111 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I do my gearbox and diff yearly. More due the cars maintenance being a hobby thing now since I haven't had a dedicated club car for a few years. Meh, oil is cheap enough. Well....except for my old R33 Skyline, I would change the gearbox oil when I changed the gearbox, which was roughly every 6 months. __________________ Disclaimer: This post represents the official views of the voices in my head at the time of posting. http://www.ft86club.com/forums/showthread.php?t=133311 I'm only here for the biscuits

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03-11-2020, 07:20 AM	#3
why? Only happy when it rains. Join Date: Feb 2013 Drives: series.blue Location: Harnett county NC Posts: 1,995 Thanks: 5,698 Thanked 1,263 Times in 749 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	Might as well change it all, including brake fluid, before your first race every year. Peace of mind might be improved more than anything else, but why not?

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