Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to cool an overheated engine [title] Avoid panicking and pull over as soon as you can. [step] An overheating engine, while serious, will not cause you immediate harm. If your temperature gauge hits the red or you notice steam coming from your engine, slow down and pull over as soon as you find somewhere safe.

Ending1: [title] Avoid carburetors as much as possible. [step] Carburetors are very malleable devices that will easily disintegrate if there is too much force applied to them. Ending2: [substeps] Avoid using other vehicles to help cool down the engine if possible. If at all possible, backup your car and put it in neutral prior to pulling over. Ending3: [substeps] If you are extremely hot, try to drive over for a much longer period of time. [title] Do not overheat after driving longer than 20 minutes. Ending4: If you notice white clouds coming from your engine, it is not smoke but steam that is coming off an overheated engine, and you have some time to pull over. If you cannot immediately pull over, you should : [substeps] Turn off the ac and open the windows.

Answer format: ending1/ending2/ending3/ending4