- Material: Brass
- Brand: Red Line
- Liquid Volume: 0.96
- Item Weight: 1.7 Pounds
- Recommended Uses For Product: Lubricant,Lube
- Less slippery low sulfur formula compatible with brass synchronizers
- Stable at high temperatures in performance applications
- Also available as lighter viscosity like MTL and MT-85
- Satisfies gear oil viscosity requirements of 75W; 80W; SAE 40 10W40 and 15W40 motor oil
- Popular in VW Audi; Nissan; Toyota and Mazda



















Charles Pearson –
Used in my 1990 Mazda Miata 5-Speed. Transmission has never felt smoother. My shifter had become “sticky” in between shifts and this cleared it right up. Don’t forget after you fill your transmission, to remove the console and shift boot from the interior and fill the shifter resivior up with 4oz of fresh fluid as well. You will need a pump to get this fluid in the transmission. There is not a pump that fits the bottle securely, you will have to set the pump in the bottle and hold it while pumping.
Joey_R007 –
Great stuff I use in all my manual stick shift cars and differentials. The only product I would use over oem factory stuff in a foreign car . This has made my transmission shift alot smoother in my 2001 Toyota MR2 Spyder using the MT-90 with gl-4 to protect the synchros especially when your getting hard on it sometimes for fun. Little pricey but actually get what you paid for, if you care a lot about your car and want it to last, this is what you want. Redline sells all the hard to find fluids for vehicles and itโs quality, highly recommend.
Keith Buckman –
Cleaned up 1st gear grinds after wasting money on oem VW fluid when Iโd take off from a stop and goes into 1st with ease. 2000 VW tdi 5spd 02j. Have around 40-50k miles on these 2 qts. Will buy again
Larkspur –
Shifting feels smooth after. 10k+ miles no issues
Shane –
I love this MT-90 for my โ08 Mazda 3 (manual transmission). It honestly does make it shift more smoothly – even in super cold weather. I wonโt use anything else for my Mazda! Five stars!
Jim in VA –
Used to change the manual transmission oil for my Miata (ND). This was the first change since swapping out the break in fluid early in the carโs life. Old fluid was six years old, and slightly dark. Put in the Red Line MT90. Car now shifts super smooth through the gears. Highly recommended. Seller price was fair, delivery was quick and on time. Highly recommend.
Jaymester –
Just what was needed and decent price.
Travis Nolen –
If you have an older Toyota with a manual transmission – this is the best gear oil to use. Shifts like butter! In the rear differential use something else like Castrol 75-140W – especially for an older vehicle.