New thermostat
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Junior Member
Joined: Aug 2012
Posts: 60
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2014 CLS550 4matic AND 2010 C300 4matic
New thermostat
I replaced the thermostat in my brothers 2010 last night. I didn't realize till this morning that the "Genuin Mercedes Thermostat" I bought from Pelican Parts is 100c. I know the one the from the factory was an 80c. Should I be concerned as that is a big jump? Also, the radiator fluid i bought; Zerex g-05 is yellow and the fluid in the vehicle was blue. Thanks, Scott
Member
Joined: Mar 2017
Posts: 182
Likes: 45
From: Toronto, Canada
2010 GLK350 4matic
I replaced the thermostat in my brothers 2010 last night. I didn't realize till this morning that the "Genuin Mercedes Thermostat" I bought from Pelican Parts is 100c. I know the one the from the factory was an 80c. Should I be concerned as that is a big jump? Also, the radiator fluid i bought; Zerex g-05 is yellow and the fluid in the vehicle was blue. Thanks, Scott
MBWorld Fanatic!
Joined: Sep 2015
Posts: 2,583
Likes: 342
2013 glk 350
You could boil out fluid continually from a 20c increase. Use whatever is recommended. I would be sure whatever fluid you use is designed for that vehicle. Fluids are designed for corrosion protection with the various metals in mind. Just putting in what you want is a mistake. Parts like thermostats and even radiator fluid make no sense buying aftermarket. Buy factory parts for a few bucks more so you know it’s done to factory spec.
Junior Member
Joined: Aug 2017
Posts: 66
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2013 GLK350 4-Matic
Everything I have read states the Zerex G-05 is 100% compatible with the Mercedes coolant. I do believe you need to dilute either one, they are not premixed. I think the biggest issue with the coolants is the silicates. You need a silicate free coolant for aluminum otherwise it can detoriate the aluminum. That's what i remember anyway from my wifes SLK 320
