In the TRF cataloges this is what (GL5) they say to use, very good for the
brass etc., this is from them not me. Its also rather pricey, only packaged
in 5 gal containers on the outside for purchase, Castrol 75/90 GL5 wholesale
is 75.00, 6.00 per qt. from TRF (they have to repackage it also) "FT"
Tony Rhodes wrote:
> I was just looking at my owners manual for my TR4A. I saw the section
> regarding lubricants. The book recommends the same lubricant as the
> differential! Hypoid 90, etc. Such as 90/140 EP.
>
> I'd think that modern 75w-90 gear oil should be a good match. As some
> people have pointed out, the GL-5 may have a negative impact on
> the brass/copper parts.
>
> Does anyone have a reference to the inadvisability of using GL-5
> in our transmissions? Everything I have heard is hear-say. I am looking
> for someone who REALLY KNOWS what the GL-5 will do....
>
> -Tony
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