In article <9505171815.AA06375@raptor>,
paisley@boulder.nist.gov (Scott W. Paisley) wrote:
> Chris wrote:
>
> > Why should
> > the starter have to turn the trans over as well as the engine?
>
> > If the trans is in neutral, you're not turning over much at all. By putting
>
> Most of time this is true, but it is turning over the input shaft and
> gears in the trans. This could be a considerable load, say if it was
> quite cold out, and the trans oil is thick. Start your car on a cold
> day with the clutch in, then let the clutch out with the trans in
> neutral. I bet the rpms drop 100. A noticeable load, IMO. Point
> being that even on a cool day, there is some load on the starter.
Agreed, the gearbox is a higher load than a normal release bearing. But
it really doesn't matter that much as long as the car *does* start. One
might use the clutch only in very cold weather, for instance.
To reduce gearbox load when cold, simply replace the gearbox oil with
pure synthetic. Mobil has got it, perhaps others too. Below freezing,
the difference is like night and day. The synthetic is more expensive,
but surely a cost-saver in the long run.
BVTW, I got a little hint from the local Mobil importer. With an O/D
gearbox, oil to GL4 spec would be best. For the differential you *must*
use GL5, for a non-O/D box any of the two.
Egil
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