I doubt it's your problem, but according to John Esposito
www.quantumechanics.com one should not use detergent motor oil in an OD
transmission. He claims it will foam and may damagage it.
He recommends non-detergent 30W. I use Castrol non-detergent.
Don Malling
Thomas Pokrefke wrote:
> I cleaned the filter at the bottom of the overdrive, and removed and
cleaned
> the pressure relief valve assembly. I refilled the transmission with
fresh
> Castrol 20w-50, but I am still having a funky problem.
>
> The overdrive will engage normally, and when I disengage the overdrive, I
> feel the 'thump' associated with the overdrive disengaging. However,
with
> the throttle closed, the overdrive will "free-wheel" rather than
compression
> brake.
>
> What else should I look at?
>
> Thomas James Pokrefke, III
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