MonsterOil EcoPro Rotor Oil

French horn, rotary trumpet, rotary trombone — rotors need oil that's light enough to keep them moving freely without attracting buildup or gumming up over time. EcoPro Rotor Oil is exactly that, made from 100% plant-based ingredients and engineered to the same exacting standards as the rest of the EcoPro line.

The precision needle applicator gets the oil where it needs to go without the mess that comes with generic bottles. Long-lasting, no strong odour, no petroleum. Developed by professional players who tested it in real conditions and found it genuinely outperformed everything else they tried.

The last rotor oil you'll need to shop for.