Recommended 190 Coolant product/mix
 

Hi all...just doing my once every two years Peak radiator cleaning product run-thru for the next 3 hours of operation...

I currently use a 50/50 mix of Advanced Auto Parts coolant but my 190 runs a bit on the hot side when its sitting in traffic; temps come back down to 90C once I get some air flowing thru the radiator.

I was curious if its better to go back to MB coolant or just buy some Peak/Prestone/Advanced Auto Parts coolant when I change out the flush/cleaning fluid...

BTW the 190 runs cooler with the Peak cleaning product... ????

Any thoughts welcome! :zoom:

I use Redline WaterWetter. It runs a few degrees cooler.

Hi Dennis...thanks for the recommendation. My mechanic mentioned that as well. After putting that in it does run a few degrees cooler.

The cooling system works great while the car is moving. Its on hot days after I slow down/stop that the coolant temp climbs and stays above 100 till I get moving again. The fan does kick in when it gets up toward 120C...but I like to have it not heat up at all. Water pump was replaced not too long ago...so I think it might be the age of the radiator...