This past winter, at the same time I swapped in a Power Master starter, I also went from a 180 degree to 195 degree thermostat. I had thoughts that it would make a fuel mileage difference. The jury is still out. The OLD starter was a POS and after dealing with it for years not starting (not turning over with hot engine- even with remote solenoid and heT shields) after the engine was warmed up, I bit the bullet and got the new starter. Now, the starter spins (but also clunks) but I almost need to have it at WOT to get it to start. Is there a hard and fast rule that a colder intake will start easier? If it were 15 degrees cooler would the fuel be less apt to evaporate after it is at operating temp.?