Redline MT-90 synthetic gear oil
Redline MT-90 synthetic gear oil
Couldn't load pickup availability
Collapsible content
Description
Redline MT-90 is a great gearbox lubricant for 'boxes that have to work hard. It's not the best choice for street cars because it needs to be up to full temperature to work properly, but if you're doing a lot of track work or need a little more protection for your gearbox it's the one to choose.
Recommended for street and track driven NDs. For street NA/NB/NC cars we recommend MTL.
NB 6-speeds require two quarts, all other Miata transmissions require three quarts (the third quart is used in the shift turret).
Instructions
Instructions are not currently available.
Shipping
$9.99 flat rate shipping. Orders over $40 ship for free in the US!
Details
There are no shipping restrictions on this item.
What does it fit?
Emissions
Emissions do not apply.
Warranty
none
SKU
Replaced factory fill at 10k miles. Shifting is noticeably smoother - highly recommended! I did need a little more than 2 quarts.
MT-90 is the Mazda (and Red Line) recommended viscosity, and I agree.
The previous owner went with MTL (28000 miles) in the gearbox and I've always found 1st to 2nd notchy until the car was up to temperature.
I just installed MT-90 (61000 miles) and all is well.
The oil that Red Line recommends, on their website, for our gear boxes is MT-90 75W90 GL-4 gear oil. Our gear boxes were designed for convention (non-synthetic oils) and the clearances are relatively large, larger than for a modern box. A correspondingly heavier oil works well in our boxes, especially for severe applications and boosted cars.