[Shop-talk] Coast in Neutral -the next great debate

[old dirtbeard]

I think it could depend upon the specific transmission. If the driven shaft
is the lower shaft (in the oil bath) it should not be a problem.

If the input shaft is the lower shaft (in the oil bath), then spinning the
top shaft (the output shaft) for extended periods could cause things to run
dry and seize.

I believe a friend of mine was towing a 1972 Z28 after blowing an engine,
and had the transmission seize-up as well. It was not a particularly good
day for him, to say the least.

best,

doug


On Mon, Dec 12, 2022 at 10:11 AM Pat Horne <patintexas at icloud.com> wrote:

> In general, I don’t see any problem. However I recall something similar
> decades ago where a tow truck driver did a two wheel haul on a car that was
> very low on trans fluid. After a long tow the trans bearings heated up &
> seized. Can’t say for sure that really happened or not.
>
> Peace,
> Pat
>
> Pat Horne
> We support Habitat for Humanity
>
>
> On Dec 12, 2022, at 10:05 AM, eric at megageek.com wrote:
>
> I'm putting this out to the group to get some opinions from the real
> experts here.
>
> If you put a manually car or truck in neutral and release the clutch while
> going down long hills or coming to a stop at a intersection, are you doing
> any damage?
>
> I'm not worried about fuel savings, just is coasting in neutral with the
> clutch release.
>
> Any thoughts?
>
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