Evolution Air Filter Oil is the latest weapon in No-Toil's struggle against the conventional standards of petroleum based air filter oil with its toxic ingredients and harmful solvent cleaning requirements. Evolution Air Filter Oil is the world's only truly “green” air filter oil product. Evolution has all the great dirt stopping tackiness and high air flow characteristics as the original No-Toil Filter Oil, but without the alcohol. Evolution is compatible with any brand air filter and, without the alcohol solvent, the foam element will last longer. Cleaning a filter with Evolution Bio Filter Cleaner is amazingly easy and quick and will shock your senses with how clean it will get your dirty filter.