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JMA: Better Performance at -13°C?

 
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dieselmartin
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2007 Volkswagen Passat
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Post09-01-2009, 13:05    Subject: JMA: Better Performance at -13°C? Quote

Hi.

Why does my JMA (6-speed manual transmission in my 170 hp Passat) shift better this morning at -13 degrees Celsius than it usually does? At least, that's how it felt.

It's never been great, but after 35,000 km, you'd expect an oil change to be necessary, wouldn't you?

The 6th gear on my sister's car, which has 140 horsepower, is much easier to engage.

I only know about problems with the first 6-speed transmissions (on the G4 with ASZ), where a different oil was said to help.

m;
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I don't know what the f*ck it was.


Translated on 10-10-2026, 22:39.
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matthiasTDI96
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Post09-01-2009, 13:32    Subject: JMA: Better Performance at -13°C? Quote

Okay, so the ERF (Early Response Feature) in the ASZ (Automatic Shift System) shifts better with new oil... currently, the first four gear changes in the morning aren't as impressive... they're not disruptive, but they're just different than they are in the summer.

Perhaps your temperature tolerances are adding up to a more favorable range.


Translated on 10-10-2026, 22:40.
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