How to Open the Car Oil Cap?
2 Answers
Use professional equipment to open it. The following are the reasons why the car oil cap cannot be unscrewed: 1. Excessive suction: If the car oil cap is too tight to open, it is likely due to excessive suction. It should be noted that after the engine starts, it operates under a negative pressure state, creating a suction effect. If you are not very strong, you may not be able to unscrew it, especially for some new cars. Since the oil cap is too well sealed, the negative pressure effect is more pronounced. In this case, simply wait until the car cools down, and you can easily open the oil cap by hand. 2. Negative pressure and over-tightening: You need to open the engine hood to see the engine oil filler port. Sometimes, the car oil cap cannot be opened due to negative pressure and over-tightening, but you can use pliers or go to a repair shop to open it with special tools. To add engine oil, you must open the engine hood.
As a detail-oriented car owner, I always locate the oil filler cap first during oil checks. It's mounted on top of the engine near the dipstick - look for a round or square metal cap marked with an oil can symbol. Never attempt this when the engine is scorching hot; wait at least 20 minutes for cooling. My routine is wiping the cap's surroundings clean to prevent dust from entering the engine. Twist counterclockwise slowly by hand, using a dry cloth for grip if slippery. Don't lean in immediately after opening - hot oil may spurt dangerously. After refilling, ensure the gasket sits straight and tighten clockwise until it clicks, otherwise leaks will soil the engine bay. Pro tip: Prepare your oil funnel and fresh oil beforehand to save time. The whole process takes five minutes, with safety as the priority.
