Some car owners ask if it's better to warm up car on spot for a few minutes or warm it up while driving? Is it better to warm up car on spot? stain damage car?
The reason for a hot car is that after car has been parked for a long time, engine oil flows back into oil pan at bottom of engine. After ignition, upper part of engine is in a state of lack of oil and lack of lubrication. About 10 seconds after starting, oil is delivered to piston, connecting rod, crankshaft and other parts of engine that need lubrication most due to operation of oil pump. In addition, at low temperatures, engine oil freezes easily. If you do not warm up car, give engine oil time to thin, but immediately distill it, which will easily cause engine wear.
In-situ preheating is supposed to be better than warming up and only takes a few minutes and vehicle can be driven when it returns to normal idle speed.
When vehicle is cold and just started, idle speed will be between 1200 and 1500 rpm. Since car has been parked overnight, engine oil is in oil pan. When starting a cold car, idle speed is high. The first is to ensure that engine starts smoothly, and second is to allow oil pump to work. quickly so that oil can quickly flow from oil pan to oil pump. Pump to each part of engine, lubricate each part and reduce wear of parts. Conversely, if car is moving immediately after starting, engine oil does not lubricate various parts of engine at that time, so driving immediately will cause parts to wear faster and reduce life of parts.
And automatic transmission of a car is also based on this principle. In addition, after idle speed returns to normal, transmission oil temperature rises, at which time automatic transmission can reach operating temperature more quickly.
Is it bad for car to heat up in place?
Too long warming up car in place will lead to formation of carbon deposits. Before driving on road, it is recommended to warm up car for one minute and wait until idle speed becomes stable. accelerate before engine water temperature reaches normal. After water temperature is normal, you can drive normally. Yes, as long as car is idling, you can drive. Do not keep car warm for too long. I hope that my answer can help you.