Hey all,
After a long time of searching the forum with no luck, I had to post a new thread as I need some help to preform a coolant change to my 91' 300SL-24.
I would like to change the coolantsince I do not know how old is it and summer can get quite hot here now days.
in addition to the coolant change, I would also like to change the thermostat, the thermostat housingand the pressure cap of course.
How should I start with the coolantchange? , at what phase of the coolant change should I change the thermostat?. What type of coolant should I use? , how much coolantshould I use the refill the system? Finally, How should I bleed the system? I noticed a bleeder cap on the thermostat housing.

Thank You

 

Dear befuddled---post your VIN!

 

could not find anything on WIS, it's a 1991 300sl-24 assembly 500