After coasting for a while in neutral, the engine cannot be refueled. The engine is not turned off, but the engine cannot be refueled. It needs to be re-ignited, then refuel can be added. Ask friends who know cars for advice

It's not an oil problem, it's an unstable idling and easy stalling, which causes the wheels to push the engine backwards and make a loud banging sound after shifting into gear. After re-ignition, the engine will resume driving the wheels and everything will be normal. To be honest, after using the car for a long time, the throttle valve will be worn to varying degrees. At this time, it cannot be washed too clean, otherwise the gap will be exposed, and the engine will not work properly, and it is most likely to cause unstable idling and stalling. The 4S store is not helping! It is better not to coast in neutral in the future, because it does not actually save much fuel, and restarting will consume more fuel. Of course, if the wear reaches a certain level, it is still necessary to replace the throttle assembly.