1991 Mercedes Benz 300se Repair Question
Topics covered: Engine, Heater, Thermostat.
Mileage: 211,000 miles.
Mileage: 211,000 miles.
Asked on December 31, 2012
Mercedes Benz 300se Engine Problem
What is the proper engine operating temperature for 1991 300SE.
Mine operates at 80C which seems cool as far as inside heater output goes. Can I get a thermostat for hotter operation ?
Mine operates at 80C which seems cool as far as inside heater output goes. Can I get a thermostat for hotter operation ?
Asked by (pending member)Answer
Replied on December 31, 2012
It is operating correctly. Sometimes the heaters do not put out very hot air as the engine is mostly aluminum and cools quickly. You can get a hotter thermostat, but only go a few degrees or the next step. Don't run it hotter than that, it will give the performance and fuel economy problems.
