Using WD-40 as a chain lubricant on a motorcycle chain is a controversial topic. While WD-40 can temporarily lubricate and displace moisture, it is not specifically designed as a long-lasting chain lubricant. Here are a few points to consider:
Displacement of Existing Lubricant: WD-40 can effectively remove existing lubricant from the chain, including specialized chain lubricants designed to withstand high-speed and high-load conditions. This can lead to increased friction and accelerated wear if not promptly replaced with a suitable lubricant.
Lack of Long-Term Lubrication: WD-40 is a light, thin lubricant that is primarily designed for penetrating, cleaning, and displacing moisture. It does not offer the same level of long-lasting lubrication and protection as dedicated chain lubricants. Its viscosity is relatively low, and it can quickly wear off under the demanding conditions experienced by motorcycle chains.
Attraction of Contaminants: WD-40 tends to attract dirt, dust, and other contaminants, which can lead to increased chain wear and decreased performance over time. This is because it does not have the same adhesive properties as dedicated chain lubricants, which are formulated to resist dirt buildup and provide better protection.
For optimal chain performance and longevity, it is generally recommended to use a high-quality motorcycle chain lubricant that is specifically designed for the purpose. These lubricants are formulated to withstand the demands of motorcycle chains, providing long-lasting lubrication, excellent adhesion, and resistance to high speeds, loads, and environmental factors.
If you have already used WD-40 on your chain, it is advisable to thoroughly clean the chain and sprockets and then apply a suitable motorcycle chain lubricant as per the manufacturer's recommendations. Regular maintenance, including proper cleaning and lubrication, will help ensure the longevity and performance of your motorcycle chain.