Ultra-Pure Regular tuning slide grease is a non-hazardous, synthetic lubricant for use on all non-mobile brass instrument slides.
The manufacturer recommends their Light grease for the first and third slides (of trumpets, etc.) which must move easier and faster, but this Regular grease for the main tuning slide and second slide.
Also available:
760311 Light
Tuning slide lubricant helps all brass instrument slides to move freely, maintains an air-tight seal and deters corrosion. Use regular grease on all static valve slides and a lighter lubricant on mobile slides including those fitted with a trigger mechanism. Check slides weekly and apply sparingly as required.