Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Changed from stock to Amsoil gear oil...short grind now from 6-5

frslee · 07-29-2014, 11:46 PM

@CaptainSlow Hi there, I did experience the same when I swapped fluid to Amsoil 75w90. There were no grinds at lower speed, but felt grinds from 6th to 5th gear at highway speed. I ended up switching to Redline 75w80 (Product image shows MTL in Amazon) and everything was very smooth. I know people have different opinions on 75w80, MT-90, MT-85 but I think all should work fine since they're all GL-4.

07-29-2014, 11:46 PM	#11
frslee Just drive it Join Date: Mar 2013 Drives: 13' FR-S Location: Maryland Posts: 1,122 Thanks: 97 Thanked 321 Times in 218 Posts Mentioned: 10 Post(s) Tagged: 3 Thread(s)	@CaptainSlow Hi there, I did experience the same when I swapped fluid to Amsoil 75w90. There were no grinds at lower speed, but felt grinds from 6th to 5th gear at highway speed. I ended up switching to Redline 75w80 (Product image shows MTL in Amazon) and everything was very smooth. I know people have different opinions on 75w80, MT-90, MT-85 but I think all should work fine since they're all GL-4.