Hi Tom,
RL MTL is a SAE 75W80 rated gear oil. RL MT90 is a SAE 75W90 rated gear
oil. The MTL might be a little better for cold climates. I have used
MT90 in the Healey gearbox/OD for quite a while. Prior to that I used
30wt motor oil or SAE 20 W 50 motor oil. I find that the RL oils give
smoother, quicker shifting than the motor oils & the OD engages a bit
more quickly. The down side of RL is quite a bit higher cost.
Note that because gear oil viscosities are rated differently from engine
oils, the MT90, 75W90 gear oil is roughly equivalent to a SAE 20W50
motor oil. The MTL 70W80 gear oil is about the same as SAE 10W30 motor oil.
Dave Russell
BN2
tom felts wrote:
> Anyone ever use this in their tranny?
> Pro/cons-------------------------------???
>
> TIA
> tom
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