My 1995 E420 is barely getting to 75 degrees C after driving 45 minutes to work. I'm in maryland, where mornings have been right around freezing.

How hard of a job is it to replace the thermostat? SHould I just get a stock thermostat or is there some specific temperature setting I should be looking at?

I'm a reasonably good DIYer, so I'd like to keep it out of the shop for this one.

Thanks,
Troy
1995 E420 105k