Just stick with DOT 4. If you use a silicon fluid, all the rubber in the system will have to be changed and you can't really go back to DOT 4 again without major hassle. Just keep the DOT 4 changed regularly and you'll have no problems--even during light track use.


------------------
Rgds,
Aaron Greenberg
MB technician
Precision Motorcars, Cincinnati, Ohio
'67 250SE Cabriolet
'77 450SL
'79 6.9 (SOLD)
'80 300SD
'85 380SE
'89 420SEL
'93 300E 2.8