Been there done that. I would change it. With the engine cold, even in the
summer, the 90W will be too thick for the snycros to work properly. Ask me
how I know this.
I agree that once the trans is warm it will probablly work OK, but I would
be worried about eating up the syncros during the time the trans is
shifting.
Kevin, 90W is not that much different in viscosity from 30W engine oil?
What? Maybe you have better go try pouring a litttle of each out at room
temp. 90W is way thicker.
Rick
On 7/21/08, Dodd, Kelvin <doddk@mossmotors.com> wrote:
>
> Dan:
>
> If I had done this to my own transmission, I would just leave the 90W in
> it.
>
> I'm doubting that you plan on driving the car during the winter, so
> unless you find the shifting is really stiff I would not worry about it.
>
>
> The 90W is not going to hurt the transmission at all. In really cold
> weather, you may find that shifting is slightly stiffer but 90W gear oil
> is not that much different in viscosity from 30W engine oil.
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