Here we go again. There was a long discussion on this, back when;
it rears its head now and then. I've run Castrol detergent 20W-50 oil
in my ODs for years, no probs. Another old wives' tale.
CR
Don Malling wrote:
> 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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