Monster Oil EcoPro Valve Oil

The valve oil you should use. That's the claim, and the people making it are professional trumpet players who spent years testing before they were satisfied enough to say it.

EcoPro is 100% plant based — developed in collaboration with a chemical company focused on getting rid of petroleum-based lubricants without sacrificing performance. The result is slick, long-lasting, odour-free, and consistent every time. Players testing it in daily use went two to three weeks between applications. No mess, no strong smell, no wondering whether it's going to hold up through the gig.

Works on trumpet, tuba, French horn, and euphonium. The last valve oil you'll need to try.