Silicone grease is one of the simplest and most versatile automotive care products, yet it is still underestimated by drivers. It helps protect seals, rubber and plastic parts, as well as moving mechanisms, all year round. Learn how to use it properly to make your vehicle more secure, quieter and less prone to breakdowns.
There are a few products in the automotive industry that are truly worth keeping to hand at all times, and silicone grease is certainly one of them. It is incredibly versatile, being resistant to water, high and low temperatures, and completely safe for rubber, plastic and many metals. This makes it suitable for dozens of situations where traditional greases are ineffective.
In this guide, we discuss five key uses of silicone grease for vehicle maintenance, providing tips on how to use it correctly to extend the life of seals, improve the operation of mechanisms and protect your car from the weather.
1. Maintenance of door, boot and fuel flap seals
The rubber in a car is under constant strain: it is compressed, stretched and rubbed against metal and plastic, not to mention being exposed to extreme temperatures on a daily basis. It's no wonder that, over time, it loses its elasticity, hardens, cracks and begins to leak water.
Silicone grease for seals creates a thin, protective layer that prevents them from drying out and freezing in winter. Regular application to the seals on doors, the boot and technical flaps (e.g. fuel filler flaps) keeps them soft, flexible and airtight.
How to do it?
Simply clean and dry the seal, then apply a thin layer of lubricant. Rub gently and leave it on. Repeat this treatment every one to two months.
2. Securing sunroofs and panoramic roofs
Sunroof mechanisms and their seals operate in exceptionally demanding conditions. Moisture, sunlight, dirt build-up and temperature fluctuations can lead to problems with component movement and leaks.
Silicone grease protects the seals from ageing, improves the gliding action of the guides, and protects critical points from water. Regular maintenance helps to avoid the need for costly repairs and ensures that your sunroof remains in pristine condition for years to come.
3. Protecting rubber elements in the engine compartment
The engine compartment contains numerous rubber or plastic hoses, bushings, and covers. These materials are exposed to high temperatures, vibration and moisture. Over time, they can harden, crack or leak.
Silicone grease can effectively restore the flexibility of these components and protect them from drying out. This is especially useful after washing the engine, during seasonal maintenance, or in older vehicles.
4. Improving the operation of plastic mechanisms
Many car parts contain fragile plastic components, such as guides, latches and switches, which are adversely affected by mineral lubricants. Silicone is safe to use with these parts and will not damage their structure.
It can be used on:
- seat guides,
- storage compartment latches,
- headrest mechanism elements,
- handles and movable plastics parts inside the car,
- seals and moving parts in campers, trailers and structures.
After application, these components operate more quietly and smoothly, and are less susceptible to wear.
5. Care of motorcycles, bicycles and recreational vehicles
Silicone grease is ideal for protecting rubber and plastic components on motorcycles, ATVs, bicycles and garden equipment. It is particularly effective on components exposed to water and dirt, such as grips, pannier seals and protective rubber covers.
It creates a protective coating that also facilitates cleaning and improves comfort of use.
How often should I use silicone grease?
Regularity is paramount. Depending on conditions:
- door and boot seals - every 1-2 months,
- sunroof - every 2-3 months,
- engine compartment - 2 times a year,
- plastic elements - every 3-4 months,
- motorcycles and bicycles - as needed, especially after washing.
Summary
Silicone grease is an inexpensive and highly effective way to extend the life of your car's rubber and plastic components, especially seals, which are exposed to the elements. Used regularly, it improves comfort, prevents doors from freezing in winter, minimises wear and tear, and protects components from premature ageing.
This is one of those products that is really worth keeping in your garage or boot, whether you drive every day or just enjoy looking after your car.