I’ve been using it since summer last, and Yamaha Slide Oil does a fine job of lubricating my trombone slide. But — no doubt like many people — I sometimes get concerned about the possible toxicity of substances I use on a regular basis. This slide “oil” (actually a soapy-looking concoction), works great, but what’s in it? I couldn’t find the information on the internet, even on Yamaha’s own website. They did have a web form for inquiries, so I wrote in:

Hello:

My question is about Yamaha Slide Oil — is it possible to list its ingredients? I’m interested in the oil’s relative toxicity to humans. Thanks, Chris

In a while, I received an email from a helpful product manager at Yamaha. He included a fairly standard Material Data Safety Sheet. To cut right to the chase, Yamaha Slide Oil doesn’t contain anything that is an eye, skin, or inhalation irritant. Although practically non-toxic, Yamaha Slide Oil should not be ingested because doing so could give you abdominal cramps and diarrhea. Insert you own TV dinner and/or Hot Pockets joke here.

The basic ingredients found in Yamaha Slide Oil:

• Stearic Acid
• Oleic Acid
• Palmitic Acid
• Ethylene Glycol
• Silicone Oil
• Anti Corrosion Reagent
• Water

05/26/23 5:28 PM: A more recent revision of the data sheet for Yamaha Trombone Slide Lubricant can be found here.