? jiffy lube for 92-100CS

[Licubar <Licubar@aol.com>]

I'm abouto due for an oil change. My Audi mechanic charges $50 for oil change
(service & parts).   Our local fast-service oil change charges around $25
(service, parts, basic checklist).   My car has a history:  tranny problems
fixed (selonoids), dead tranny computer, O2 sensors, and somewhere in the
engine, a "minor" leak (nothing dripping in the garage).  

What precautions and words of wisdom can you share w/ me regarding using the
cheaper alternative?  

Thanks, 
Linda
'92 100CS, 83K