Synthetic ATF: need advice

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

Hi List!

I need an advice from those of qlisters who are familiar with auto
trannies. I'm currently considering switching to synthetic ATF. I know
it is supposed to be more heat resistant, which is very desirable on
poorly cooled 087 slushbox. It also works better at low temps. But I've
also heard that the synthetic ATF is so slippery that it makes clutches
and brakes in the transmission not operate properly. True or not? Also
the friend of mine said that the synthetic and mineral fluids must not
be mixed. He has heard of a transmission shop which has the equipment
allowing to suck the ATF out of the torque converter, thus making a
complete ATF renewal possible. Should I go for it? I remeber someone on
the list mentioned replacing the filter in the transmission. My Haynes
manual only says "clean the strainer" and doesn't mention a filter. Is
there a filter I should replace? Thanks for any hints. The car is 87
5KCS with 3sp slushbox. 

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 :-)