From REDS Racing:
REDS Racing have just released their high-quality air filter oil.
REDS Air Filter Oil is a specific lubricant designed for foam air filters on Off-Road engines.
Reds Racing Filter Oil is blue in colour for easy application. It’s a super tacky, water repellent formula which helps to reduce sand and dust from entering the engine, it repels water without affecting engine breathing. In this way, it helps to extend the life of your engine.