What kind of oil should be used for car sealing strips?
3 Answers
Car sealing strips can be coated with some Vaseline to delay the aging of the rubber strips. The following is a related introduction to car sealing strips: 1. Classification by sealing characteristics: They can be divided into weatherstrips (WEATHERSTRIP) and general sealing strips (SEALING). Among them, weatherstrips have hollow sponge tubes, which provide better temperature and humidity retention functions. Commonly used weatherstrips include door frame sealing strips, trunk sealing strips, and engine hood strips. Commonly used general sealing strips include front and rear window sealing strips, corner window sealing strips, and inner and outer strips. 2. Classification by material type: They can be divided into rubber sealing strips, plastic sealing strips, and thermoplastic elastomer sealing strips.
For maintaining the sealing strips, I use a specialized rubber protectant. I once tried applying random engine oil, which caused the seals to harden and crack within months. Later, a senior technician at the dealership recommended this product, saying its silicone oil formula penetrates rubber crevices to form a protective film. Before summer heat hits, I apply it once: first clean the seals thoroughly, then evenly coat them with the protectant—don’t forget the sunroof tracks and door frame seams. Let it dry for 10 minutes before closing doors to avoid trapping dust. Never use grease or WD-40—they may lubricate temporarily but corrode rubber. My car’s seven-year-old seals remain supple, and the door-closing sound is quieter than my neighbor’s sharp clunk.
I choose special silicone grease for car weatherstrips, just apply it like squeezing toothpaste. I once tried using peanut oil to save money, but it attracted ants and got moldy. Silicone grease doesn't evaporate, one application can last half a year, and it won't crack even in sub-zero temperatures during winter. Pay special attention when treating the weatherstrip at the junction of the A-pillar and windshield - this is a major leak-prone area. Avoid washing the car immediately after application; wait two days for the protective layer to cure. Keep a small soft brush in your car to remove leaves stuck in the weatherstrip gaps before applying grease, otherwise it will affect effectiveness. It's low-cost but worry-free, saving frequent trips to the auto shop for new weatherstrips.
