This may be dumb...but...

[cheburashka]

I use it on the third valve slide of my euphonium to facilite easy slide pulls in the lower partials. However, I also have a spring linkage that keeps the slide from falling out.

I wouldn't recommend it on tuning slides that you don't move while playing. Most slide creams are water activated. They get gooey if they aren't kept moist, which would eventually lead to binding and possibly corrosion. They're also very poor at filling gaps.

I've found that Slide-o-Mix works exceptionally well on older piston valves that no longer fit tightly. The two part formula "plates" the piston, then adds a gooey but very slippery lubricant which improves compression, but still gives quick valve action. The only downside is that the valves tend to bind a bit during the first couple of minutes of playing, until they get moist.

[bigboom]

I was told by my professor to use trombone slide cream, I actually use slide-o-mix, on my slides and it makes it so much easier to pull them. The other thing I have heard of is using slide grease and putting valve oil on that to lighten it up.

[dtemp]

Trombonetine works great on my slides.

[Joe Baker]

Doc AsKew got me hooked on axel grease for the slides. (not to be confused with Axel Rose)

Doesn't the axle grease stink?

No, no, no!! He clearly said, "Not to be confused with Axel Rose"!!!

[windshieldbug]

Doc AsKew got me hooked on axel grease for the slides. (not to be confused with Axel Rose)

Doesn't the axle grease stink?

Then it would be the Melancholy Rose...