urS4 trans additive?

John Cody Forbes cody at 5000tq.com
Wed Oct 18 19:14:30 EDT 2006

Brett Dikeman wrote:
> Almost....any GL4 compatible synthetic gear oil.  Some GL5 gear oils
> had an additive that was not compatible with brass syncros and they
> would be destroyed in short order.  I think most manufacturers have
> stopped using said additive, but I don't know for sure, and god knows
> what's sitting on the shelf at Shady Supply.

I was going to use GL5 compatible Mobil 1 75w90, any input there? Thats also 
what I put in the rear diff since we didn't have an straight 90 weight.

-Cody Forbes
'86 5k noT noQ
'86 5k noT noQ - Parting Out
'87 5ktq
'87 5ktq - Fast. Really Fast. 

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