New answers tagged warmup
When the engine first starts in cold weather, the oil is warming. The rings on the pistons are reseating, from being cold, therefore contracted! As the engine runs, and warms the rings, they expand, as do the valves, even the Pistons, as do most moving parts. If the car has a standard transmission. One should shift it into neutral in order to warm the ...
Top 50 recent answers are included