SL/R231: What Coolant Brand Do You Use?
Thread Starter
Junior Member
Joined: May 2021
Posts: 31
Likes: 20
From: Connecticut
SL 550
What Coolant Brand Do You Use?
Winter is coming fast and I just checked the coolant with an antifreeze tester in my SL550. It shows good to -10 deg. That's not good enough. Looking in the coolant tank the color of the coolant is blue (or violet I can't tell which).
So what brand of coolant do I use? The owners manual does not give that information. It just says MB approved.
So what brand of coolant do I use? The owners manual does not give that information. It just says MB approved.
Junior Member
Joined: Jul 2016
Posts: 44
Likes: 10
'13 SL63, '06 SL600, '98 S600
Mercedes branded coolant only. Cost varies between $20-30 dependent upon where you purchase, but difference is just a few dollars more or less than parts store coolant. If in a pinch, Xerex G05 is the only coolant sold at general parts stores that can be used.
