What kind of lubricant is used for car doors?
2 Answers
Door lubrication can be done with grease or engine oil, or hinge lubricating grease can be used. Here is an introduction to automotive lubricants: 1. Introduction: Automotive lubricants are divided into several categories, including mineral lubricants, synthetic lubricants, and semi-synthetic lubricants. Lubricants are formulated from hydrocarbons refined from natural gas and crude oil. There is no clear international definition for synthetic oil, but generally, lubricants containing PAO are referred to as synthetic engine oil. 2. Raw materials: For commercially available products labeled as synthetic oil, the PAO content is mostly below 12%. Full synthetic engine oil is formulated with 100% PAO (Poly-Alpha-Olefin) as the base oil and additives.
I'm quite experienced with door lubrication. I always check it when washing my car. Hinges and door locks should be handled separately: Lithium-based grease works best for hinges – the white or blue kind, just apply a thin layer, don't overdo it or it'll attract dust. For door lock mechanisms, use a penetrating lubricant spray like WD-40 to remove rust first, then apply dedicated door lock lubricant. Don't forget the rubber seals either – spray them with silicone-based lubricant to prevent aging and cracking. Never use engine oil as substitute – it's too thin and will leak everywhere, actually accelerating dust accumulation. I always keep a can of lithium-based grease in my car – it's cheap and durable. Reapplying every six months keeps the doors opening and closing smoothly.
