With the Monster oil the valves are fast and have stayed fast for 2 weeks since the first application

Fantastic valve oil

Awesome valve oil; put some on my very sticky, 90-year-old valves in my 90 year old trumpet, and Monster Oil worked like a charm

I cleaned the valves and oiled them several times.

I had used Roche-Thomas and Binak Pro oil before and the valves seemed a little sluggish

After being dropped off a stage at a gig in the '90s, the third valve had to be reformed, and had previously not worked the same since (you had to apply pressure from a certain direction so the valve wouldn't stick.

This oil is an amazing product and by far is my favorite valve and slide oil to use on my trumpets.

Smooth, must clean valves before first use!

I cleaned the valves again a re-oiled them with Monster.

I was continuing to use the valve oil I already had on my trumpet and the first valve became very sluggish

Very smooth oil - valves feel excellent!

(Since I practice every day, it was because of this that the valve became sluggish)