Quote:
Originally Posted by Wayne Maybury
The engine is designed and probably built to run at 180 to 190 degrees. Operating it for an extended period of time at a temp well below 180 means that the tolerances are not correct. For example the pistons are aluminum and the cylinders are steel. The 2 expand at different rates with the change in temperature but are machined to operate at 180 not 140 degrees.
As a rule of thumb, your engine sustains more wear in the first 5 minutes of operation than it does in xxx miles (sorry, I can't remember the number of miles).
Wayne
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I had to replace my thermostat and the closest engine catalog listed a 195. Mine was 180. Any advantage or disadvantage in going higher?