Use HPI Engine Air Filter Oil to properly maintain your nitro engine - just a few drops after cleaning your air filter will keep it in top shape and ready to protect your engine from dangerous dust and dirt particles.
Every few runs, just clean your air filter with fresh nitro fuel, let it dry and re-oil with this perfectly formulated air filter oil - this will make sure your air filter is working to its full potential and properly protecting your engine.
- Klotz quality synthetic formula specific to each application.
- Ideal viscosity custom-tailored for each particular use.
- Easy to use and apply.
- Top OptiFuel brand and Klotz quality combined in one top-quality product.
