1995 E320 Wagon, 2002 S430
My engine temp when warmed up on average sits right at about the 80 mark. But I noticed when I let it idle for 10 minutes yesterday it climbed to the next mark above it (which I believe is 90 but it is not labeled, just the line right at midway). Is this normal? If not, I may be looking at replacing the thermostat and cannot find the procedure on here for that but know there has got to be a writeup on it somewhere in the forum (if anyone has it please post it). Thanks.