En-2f 1800 km set out in the morning, and the blue smoke disappeared within one minute. The temperature is 4 degrees at night, is it 14 degrees during the day serious? How is it caused?

1, the oil viscosity is not enough. If the car stops for one night, the engine oil will all settle on the bottom of the oil, and there is no engine oil seal on the cylinder wall, and the engine oil will burn (blue smoke); After the car hit the crankshaft, the engine oil splashed on the cylinder wall to seal the gap between the piston, piston ring and cylinder wall, so there was no blue smoke.

2, piston, piston ring, cylinder wall wear, resulting in excessive clearance, so burn oil; After landing, the oil splashed, and the piston, piston ring and cylinder wall expanded due to heat, eliminating the gap, so the oil did not burn.

3. If you just start to burn oil, if you don't have an annual inspection (tail gas measurement), you can temporarily use or replace high-viscosity oil (winter oil) (which may eliminate or reduce the phenomenon of burning oil). It is best to carry out maintenance when conditions permit.