urS4 trans additive?

[LL - NY]

DO NOT use Mobil 1 in your tranny. It's GL5. BTDT in my 200Q by mistake, it
wasn't kind to the synchros. Fortunately, a refill with Red Line  MT90 (GL4,
75W-90) did cure the problem within a week after the drain/fill.

Scargo

On 10/18/06, John Cody Forbes <cody at 5000tq.com> wrote:
>
> 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
> http://www.5000tq.com
> '86 5k noT noQ
> '86 5k noT noQ - Parting Out
> '87 5ktq
> '87 5ktq - Fast. Really Fast.
>
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