This Racing Line Oil and Cleaner Kit is essential to help you keep your Racing Line Trifoam® filter or intake in peak condition at all times and ensure that the complex triple-layer foam continues to deliver its power and filtration benefits for many years. It’s important that only this Oil and Cleaner Kit are used, as they've been specially formulated to work with Trifaom foam air filter material. This Racing Line Oil and Cleaner Kit comes with both cleaning fluid and reoiling spray. Racing Line recommend that the filter element is cleaned and reoiled every 10,000 miles/16,000 km, and/or a visual inspection at least every 6 months. This is a simple procedure, and will ensure that your filter continues to deliver the power improvements over a standard car. If your car is regularly used in a dry/dusty environment, you are advised to clean and re-oil your filter more regularly If you don't clean your filter at the above intervals, no loss of filtration will occur, and your engine will still be fully protected. However, the performance advantages from the additional air flow of a clean filter will be lost. You will also shorten the life of the filter element. No other products for either the cleaning or re-oiling are suitable for Racing Line’s Trifoam®, and in many cases, other non-approved cleaning products may lead to rapid deterioration of the filter material. Their use will unfortunately void your filter warranty.