Silicone sprays are a practical choice for vehicle suspension components, offering moisture resistance, reduced friction, and protection for rubber or plastic bushings, bushings, hinges, and sliders. This guide highlights five top silicone sprays that perform well on automotive suspension parts, helping prevent squeaks, binding, and premature wear. Each product presents a blend of lubrication, protective film, and compatibility with common suspension materials. Read on for a quick reference and an objective buying guide to help you choose the right option for your vehicle.
| Product | Brand | Key Benefit |
|---|---|---|
| WD-40 Specialist Silicone Lubricant with SMART STRAW | WD-40 Specialist | Thin protective film, versatile surfaces |
| DuPont Silicone Lubricant with Teflon | DuPont | Non-metal materials protection, water resistance |
| CRC Heavy Duty Silicone Lubricant | CRC | Residue-free lubrication for metal and non-metal parts |
| Permatex 80070 Silicone Spray Lubricant | Permatex | Non-marring, insulates, lubricates and waterproofs |
| DuPont Silicone – Surface Safe Lubricant | DuPont | Nano-ceramic enhanced lubrication and weatherproofing |
Note: All products listed here are suitable for automotive applications and are commonly used on suspension-related components such as hinges, joints, bushings, sliders, and linkage. When selecting a spray, consider material compatibility, operating temperatures, and whether you prefer a residue-free finish for quiet operation or a slightly stronger film for harsher conditions.
WD-40 Specialist Silicone Lubricant With SMART STRAW
WD-40 Specialist Silicone Lubricant with SMART STRAW SPRAYS 2 WAYS is designed to lubricate a broad range of materials, including metal, rubber, vinyl, and plastic. It creates a clear, thin protective film that dries quickly, reducing friction without leaving a sticky residue. This makes it suitable for suspension components such as hinges, pivot points, and linkage where moisture and corrosion can cause squeaks or sticking. The SMART STRAW feature allows for precise application in tight spaces, which is valuable when treating car suspension bushings or sliders without excess overspray.
Key Considerations
- Surface compatibility with metal, rubber, and plastics common in suspensions
- Quick-drying film that resists dust and moisture
- Two spray modes for broad and pinpoint application
DuPont Silicone Lubricant With Teflon Fluoro Polymer
DuPont Silicone Lubricant with Teflon Fluoro Polymer is a lightweight, non-damaging option for non-metal materials that may be sensitive to conventional lubricants. It dries to a protective layer that resists water, making it suitable for suspension components exposed to moisture, such as weather seals around protective housings or non-metal bushings. While it protects and lubricates, its emphasis on compatibility with delicate plastics and rubbers can help prevent swelling or swelling-related squeaks on certain suspension parts.
Key Considerations
- Ideal for non-metal materials near suspension areas
- Water-resistant and protective without harsh residue
- Best for components sensitive to conventional lubricants
CRC Heavy Duty Silicone Lubricant
CRC Heavy Duty Silicone Lubricant is a clear, residue-free option that leaves little to no film behind. This can be advantageous for suspension components that require long-lasting lubrication without attracting dirt or dust. It provides lubrication, corrosion resistance, and protection for metal parts, along with compatibility for some non-metal materials. The absence of a sticky after-feel helps maintain smooth operation of hinges, joints, and sliders in automotive suspensions.
Key Considerations
- Residue-free formula minimizes dirt attraction
- Good for metal components and some non-metal surfaces
- Ideal for areas where clean, quiet operation is desired
Permatex 80070 Silicone Spray Lubricant
Permatex 80070 Silicone Spray Lubricant offers a versatile solution for a range of mechanical components, including hinges, channels, and general-purpose lubrication. It lubricates, insulates, and waterproofs, which can be advantageous for weather-exposed suspension elements. Its ability to coat hinges and channels helps prevent binding and squeaks in doors, trunk lids, and other moving suspension-related parts. Its non-marring properties preserve the integrity of painted or plastic surfaces around the suspension area.
Key Considerations
- Non-marring on paint, rubber, and plastic surfaces
- Electrical insulation properties
- Useful for doors, windows, and hinge areas associated with a vehicle’s suspension environment
DuPont Silicone – Surface Safe 14 oz
DuPont Silicone – Surface Safe Lubricant brings Nano-Ceramic Boron Nitride particles to a silicone base for enhanced waterproofing, protection, and lubrication. It is designed for broad compatibility with rubber, plastic, vinyl, leather, metal, and wood surfaces. With a wide operating temperature range, this spray is suitable for automotive environments where humidity, temperature swings, and road spray challenge suspension components. The ceramic-enhanced formula aims to reduce sticking and squeaks while maintaining a protective film on critical parts.
Key Considerations
- Nano-ceramic enhanced lubrication for durable protection
- Wide temperature range for varying climates
- Versatile use on multiple materials near suspension components
Buying Guide: Key Purchase Considerations
When selecting a silicone spray for car suspension, consider the following factors to balance performance with component safety:
- Material compatibility: Cross-check the spray’s guidance for metal, rubber, plastic, and vinyl components commonly found on suspensions. Some formulas are gentler on rubber bushings, while others focus on metal protection.
- Residue and cleanliness: For clean operation and reduced dust attraction, prefer residue-free formulas. If you want longer-lasting protection in harsh conditions, a thin protective film may be preferable even if it leaves a light film.
- Temperature range: Vehicles experience a wide range of temperatures. Choose a product with a suitable operating range to prevent film breakdown or loss of lubricity under cold starts and hot engine bays.
- Application method: Sprays with adjustable nozzles or “smart straw” features can help target tight spaces around suspension linkages and hinges without overspray.
- Electrical and protective properties: If a part interfaces with electrical components or sensors, consider sprays that offer insulation and moisture resistance without causing damage to surrounding materials.
- Long-term maintenance: For maintenance plans, select products with durable lubrication and corrosion protection to reduce the need for frequent applications.
These products are designed to maintain smooth operation of suspension-related elements while offering protection against moisture, wear, and corrosion. For best results, follow manufacturer guidelines for surface preparation, shake well, and apply in a clean, ventilated area. Always avoid prolonged exposure on belts or surfaces where contact with hot components could cause transfer or damage.