Quote:
Originally Posted by b15
It's funny you say this bc there's an m3 sedan that parks near me at the train station everyday. Every afternoon he gets in starts it up and is off within 5secs even in the dead of winter. I can hear his exhaust roaring through the lot. Hell I even give my DD at least 30-60secs for oil to circulate before driving off easily.
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because it says in the driver's manual they don't recommend "warm-up" the engine, even the 370z manual say that too.
They recommend drive off with a slow speed.
quote from the video description:
"Cars with electronic fuel injection do not need to be warmed up before lightly driving off. This is because fuel injected engines can compensate for temperature changes. Cold engines run rich to compensate for poor fuel atomization. This means extra fuel is injected into the combustion chamber.
Now fuel is a solvent, so when extra fuel gets on the cylinder walls, it washes away the oil from the cylinders and pistons. Less oil on the cylinder walls means less protection, and because the oil is cold it makes it harder for it to be replaced. This means the longer you spend with your engine cold, the more wear you’ll have. Idling the engine doesn’t put much heat into it, so the car remains cold for a long duration.
If it’s cold outside, you can wait 15-30 seconds to ensure that oil is flowing, but you don’t need to wait for the engine to be warm. It will heat up faster by driving the car lightly. By heating it up faster, the oil gets to operating temperature more quickly, and this is what you want to prevent wear. If it’s really cold outside, the time it takes to scrape off the windows so you can see will be plenty of time for oil to start circulating, so you can get in and go once you can see out the windshield. "
