factory differential fluid warning - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

hankster · 11-07-2012, 02:12 PM

for the past month or so I've noticed a slight catching/roughness/vibration in the rear end when turning from a stop so I decided to change out the diff fluid as a quick and easy thing to try to see if would make a difference.

When I drained the factory fluid only 1 liter came out. I believe the specs say it should have around 1.3 liters so it was definitely low. Sludge on the magnetic drain plug.

Filled it up to the fill hole until it was just barely "weeping" out with 1.25 liters of Motul 300 LS 75w90 (LS stands for LImited Slip).

The slight catching/roughness/vibration completely gone - nothing but smoothness now.

So check your factory fluid fill levels and use quality fluids. It makes a difference.

Hanakuso · 11-07-2012, 02:15 PM

I thought we were suppose to use the normal Motul 300. Not the LS?

ft86Fan · 11-07-2012, 03:27 PM

Quote:

Originally Posted by Hanakuso

I thought we were suppose to use the normal Motul 300. Not the LS?

Thats what I thought since we don't need the FM.

No Limit Motorsport · 11-07-2012, 03:33 PM

You can use either regular Gear 300 or Gear 300 LS.

Our differentials do not need the LS additives, at the same time, having it will not do it any harm, just spending a bit extra for something that isn't needed.

Adam

Dave-ROR · 11-26-2012, 01:29 AM

Great, mine's been doing that for awhile now.. thousands of miles.. DOH! Changing it this week if I can get some Motul in

JoeBoxer · 11-27-2012, 02:13 AM

Quote:

Originally Posted by Dave-ROR

Great, mine's been doing that for awhile now.. thousands of miles.. DOH! Changing it this week if I can get some Motul in

No Limit should be able to get it to you quickly, i got mine in 2 days from NY to Arkansas. I'm hoping to change mine out this week i should have done it when i installed the cat back but i have to put the overpipe on this week too so it will be back on the lift.

Jesse · 11-27-2012, 08:14 AM

the motul 300 feels much better than the oe fluid

Dave-ROR · 11-27-2012, 10:02 AM

Quote:

Originally Posted by JoeBoxer

No Limit should be able to get it to you quickly, i got mine in 2 days from NY to Arkansas. I'm hoping to change mine out this week i should have done it when i installed the cat back but i have to put the overpipe on this week too so it will be back on the lift.

I just grabbed some locally. Motorcycle shops carry motul products so its easy to find

a lot easier than the torco mtf I ended up ordering through amazon.

diirk · 11-27-2012, 10:07 AM

I had the same issue as the OP. changed out the fluid to Lucas and the vibration/grind is gone. I didn't measure the amount of OEM fluid I drained but the drain plug definately had a lot of material on the maganet.

Grip Ronin · 11-27-2012, 04:54 PM

Figured it would have a lot of shavings.Im planning to change all fluids at 1500 miles

Dave-ROR · 11-27-2012, 05:23 PM

A lot of material on the magnet is pretty standard for new diffs. S2K had a ton, RX7s had a ton, etc.

AZP Installs · 11-27-2012, 10:30 PM

Quote:

Originally Posted by No Limit Motorsport

You can use either regular Gear 300 or Gear 300 LS.

Our differentials do not need the LS additives, at the same time, having it will not do it any harm, just spending a bit extra for something that isn't needed.

Adam

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goke186 · 11-28-2012, 03:49 AM

Well, i guess i know what i will be doing this week lol

11-07-2012, 02:12 PM	#1
hankster Senior Member Join Date: Jun 2012 Drives: 2013 FR-S Argento Location: Katy/Houston TX Posts: 140 Thanks: 61 Thanked 37 Times in 21 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	factory differential fluid warning for the past month or so I've noticed a slight catching/roughness/vibration in the rear end when turning from a stop so I decided to change out the diff fluid as a quick and easy thing to try to see if would make a difference. When I drained the factory fluid only 1 liter came out. I believe the specs say it should have around 1.3 liters so it was definitely low. Sludge on the magnetic drain plug. Filled it up to the fill hole until it was just barely "weeping" out with 1.25 liters of Motul 300 LS 75w90 (LS stands for LImited Slip). The slight catching/roughness/vibration completely gone - nothing but smoothness now. So check your factory fluid fill levels and use quality fluids. It makes a difference.

11-26-2012, 01:29 AM	#5
Dave-ROR Site Moderator Join Date: Dec 2010 Drives: Stuff Location: Florida Posts: 10,317 Thanks: 955 Thanked 5,965 Times in 2,689 Posts Mentioned: 262 Post(s) Tagged: 8 Thread(s)	Great, mine's been doing that for awhile now.. thousands of miles.. DOH! Changing it this week if I can get some Motul in __________________ -Dave Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback DD: 2005 Acura TSX Tow: 2022 F-450 Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4 Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX Projects: 2013 Subaru BRZ Limited track car build FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles

11-27-2012, 08:14 AM	#7
Jesse wheel gap Join Date: Jun 2012 Drives: whiteout frs, 04 xrs Location: MA Posts: 555 Thanks: 460 Thanked 249 Times in 153 Posts Mentioned: 11 Post(s) Tagged: 1 Thread(s)	the motul 300 feels much better than the oe fluid __________________ http://www.ft86club.com/forums/showthread.php?t=20039 - journal --- http://www.flickr.com/photos/29438365@N04/

11-27-2012, 04:54 PM	#10
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	Figured it would have a lot of shavings.Im planning to change all fluids at 1500 miles __________________ IG-Joey_Soul Progress Thread Ported billet 20G

11-27-2012, 05:23 PM	#11
Dave-ROR Site Moderator Join Date: Dec 2010 Drives: Stuff Location: Florida Posts: 10,317 Thanks: 955 Thanked 5,965 Times in 2,689 Posts Mentioned: 262 Post(s) Tagged: 8 Thread(s)	A lot of material on the magnet is pretty standard for new diffs. S2K had a ton, RX7s had a ton, etc. __________________ -Dave Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback DD: 2005 Acura TSX Tow: 2022 F-450 Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4 Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX Projects: 2013 Subaru BRZ Limited track car build FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles

11-07-2012, 02:15 PM	#2
Hanakuso Senior Member Join Date: Apr 2012 Drives: FR-S Location: California Posts: 1,956 Thanks: 294 Thanked 673 Times in 390 Posts Mentioned: 11 Post(s) Tagged: 2 Thread(s)	I thought we were suppose to use the normal Motul 300. Not the LS?

11-07-2012, 03:33 PM	#4
No Limit Motorsport Senior Member Join Date: Jul 2012 Drives: 2013 DGM BRZ Location: Long Island, NY Posts: 2,266 Thanks: 355 Thanked 406 Times in 228 Posts Mentioned: 27 Post(s) Tagged: 0 Thread(s)	You can use either regular Gear 300 or Gear 300 LS. Our differentials do not need the LS additives, at the same time, having it will not do it any harm, just spending a bit extra for something that isn't needed. Adam

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