- Joined
- May 2, 2022
- Messages
- 69
It’s coming up on time to swap out the gear lube on my Miata. Manual says to only use Mazda Long Life Gear Oil IS to maintain the original shift feel, however this stuff is hard to find and when you can find it they ask for $35+ per quart. The manual also says 75W-90 GL-4 is acceptable however shifting in cold weather may be affected.
I love the feel of this transmission and want to keep it that way.
I’ve searched several forums and there is a lot of different opinions on whether or not the 75W-90 feels the same or worse. Lots of good reviews on Redline MT-90, but I’ve also read that the Mazda oil is actually a 75W-80, which Redline also has a flavor of.
Can anyone confirm that the Mazda original gear lube is indeed 75W-80? Also looking for any helpful suggestions on what you would or have used and how it performed.
I love the feel of this transmission and want to keep it that way.
I’ve searched several forums and there is a lot of different opinions on whether or not the 75W-90 feels the same or worse. Lots of good reviews on Redline MT-90, but I’ve also read that the Mazda oil is actually a 75W-80, which Redline also has a flavor of.
Can anyone confirm that the Mazda original gear lube is indeed 75W-80? Also looking for any helpful suggestions on what you would or have used and how it performed.