What kind of oil should be used for car door squeaking?

[LeMason]

For car door squeaking, either grease or engine oil can be used. 4S shops typically use liquid grease, as long as it provides lubrication. Be careful not to apply too much, as it can attract dirt. Here is some additional information: 1. Squeaking caused by door seals: Over time, door seals can age, causing friction between the seal and the car body, which may result in squeaking while driving. Check your car's seals and replace them if necessary. 2. Squeaking caused by the door itself: This issue may arise if the door lock striker is positioned too outward, making the door less tightly fitted to the car body. In this case, adjust the door lock striker inward gradually until the door fits snugly against the car body. 3. Squeaking caused by door hinges: Over time, hinges can accumulate friction, leading to squeaking. To address this, apply some automotive rust inhibitor to the hinges, followed by a small amount of grease. This will significantly reduce friction and eliminate the squeaking.