OT: gearbox oil temperature

[Mike McLeod]

GEnts,

can anyone hazard a guess as to what the approx oil temp of a modern 6 speed automatic gearbox should be once it's got up to operating temperature?

Ta.

[The Natural Philosopher]

Id guess in the 60-90°C range

[Andy Burns]

yes, mine (7 speed flappy-paddle) reads about 90°C though it takes a lot longer to get there than the water temp does.

[Cursitor Doom]

I *very* much doubt it!

[Andrew]

Nope. Sometimes 'shares' the engine coolant when the gearbox oil cooler that is inside the engine coolant rad springs a leak and the two fluids mix. Expensive repair job :-(

[Tim+]

Well at a guess I?d say that the desirable properties for an engine oil and a gearbox oil are wildly different. The only time that I know of that it has been shared is in the old BL A-series transverse engines when the gearbox was effectively in the sump.

Oddly, no one else has copied that system.

Tim

[Jim GM4 DHJ ...]

and the transfer bearing always went

[Jim GM4 DHJ ...]

totly stupid

[Cursitor Doom]

Yup, but that's how they made it!

[newshound]

Agreed. It's going to depend on ambient temperature of course.

[Jimk]

Shares the engine oil too?

[Jimk]

Why?

[Jimk]

Ohhhh DSG.....