RE: Auto Audi (Wife must have auto?)

[Aleksander Mierzwa <alex@matrix.com.pl>]

I think on most cars the automatic transmission is cooled by means of
the ATF-to-coolant heat exchanger. The ATF-to-air cooler is a good idea,
but it should be thermostatically controlled, as of of the functions of
the ATF-to-coolant heat exchanger is to heat the tranny during warm-up
period.

Aleksander Mierzwa
Warsaw, Poland
mailto:alex@matrix.com.pl
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)

> -----Original Message-----
> From:	ScottyCBoy@aol.com [SMTP:ScottyCBoy@aol.com]
> Sent:	Monday, October 13, 1997 2:19 AM
> To:	Quattro@coimbra.ans.net
> Subject:	Fwd: Auto Audi (Wife must have auto?)
> 
> In a message dated 97-10-12 21:16:15 EDT, ScottyCBoy writes:
> 
> << In a message dated 97-10-12 19:34:48 EDT, you write:
>  
>  <<  A
>   potential problem with the 5000 auto is the seal between the auto
> and
>   differential can leak which would result in gear oil in the ATF,
> possibly
>   damaging the auto and frying the differential.   >>
>  
>  According to a local Audi master tech he says that the synthetic diff
> fluid
> that Audi uses evaporates at operating temperature.  The fluid level
> drops,
> causing play in the pinio gears, then causing the diff seals to
> leak... If
> the fluid level is kept at maximum level these seals would probably
> last
> forever..  Also since the Auto tranny is heated by the engine coolant
> it runs
> at engine temp, which is rather hot for an auto tranny.  I've seen the
> pistons deteriorate because of this heat, this is another weak
> point...  If
> you want to make your auto tranny last install an additional air to
> ATF
> cooler.  
>  
>  Scott >>
>