Liqui Moly Motorbike Foam Filter OilLiqui Moly Motorbike Foam Filter Oil Special oil for wetting foam air filters. Thanks to the outstanding adhesive properties of the liquid, sand and dust are reliably trapped in the filter, preventing greater wear on the engine. Increases engine service life. Water repellent effect. Does not resinify or foam. The blue color when the filter is wetted helps to ensure uniform application. Suitable for use on all two stroke and four stroke motorbikes with