Need quick reply GL-4 or GL-5 in rear diff? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

MR2_D2 · 11-18-2013, 08:33 PM

So I'm going to change out the fluids in my BRZ and I got Red Line MT-90 75W90 GL-4 for both the trans and rear diff. From what I read the fluid will be fine for the trans but I can't seem to find if the GL-4 will be ok for the diff. If anyone can let me know I'd appreciate it. I searched but I couldn't find a clear answer.

PrimeMotoring · 11-19-2013, 04:27 PM

Quote:

Originally Posted by MR2_D2

So I'm going to change out the fluids in my BRZ and I got Red Line MT-90 75W90 GL-4 for both the trans and rear diff. From what I read the fluid will be fine for the trans but I can't seem to find if the GL-4 will be ok for the diff. If anyone can let me know I'd appreciate it. I searched but I couldn't find a clear answer.

We tend to stick to GL5 for the rear diff if using Redline. The only other fluid we use is Motul 300 which is both GL4/GL5

fooyc · 11-19-2013, 10:52 PM

for now I used Motul competition gearoil 75w140

BestFRS · 11-19-2013, 11:04 PM

Go with GL5

11-18-2013, 08:33 PM	#1
MR2_D2 Member Join Date: Oct 2013 Drives: 73 Beetle, 86 Toyota MR2, 2014 BRZ Location: Lakewood CO Posts: 14 Thanks: 0 Thanked 13 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Need quick reply GL-4 or GL-5 in rear diff? So I'm going to change out the fluids in my BRZ and I got Red Line MT-90 75W90 GL-4 for both the trans and rear diff. From what I read the fluid will be fine for the trans but I can't seem to find if the GL-4 will be ok for the diff. If anyone can let me know I'd appreciate it. I searched but I couldn't find a clear answer.

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11-19-2013, 10:52 PM	#3
fooyc Member Join Date: Jul 2013 Drives: GT86-JDM Location: MY Posts: 54 Thanks: 8 Thanked 9 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	for now I used Motul competition gearoil 75w140

11-19-2013, 11:04 PM	#4
BestFRS Member Join Date: Sep 2013 Drives: 2013 FRS Location: Michigan Posts: 25 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Go with GL5

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