Jim

I agree, However, I noticed other people's car running in Arizona around 95-97 C in local traffic.

My car does the same in local, however on highway it runs around 90 C. Keep in mind its hot here in AZ usually around 108 F.

1. Now based on the above info, do you still think I need to change my thermostat?

Also, I heard MB make several temp Thermostat.

2. Can you please guide me which one is best for this climate and my car.

3. How would I go about installing it, any tricks or gasket, sealer..etc.

98 e320
Thanks