Detail 01
Synthetic formula
The oil is designed to clean, protect, and lubricate instruments.

Independent shopping perspective
For brass-instrument maintenance that calls for heavy synthetic rotor oil, this 1.25 oz Monster Oil formula combines cleaning, protection, and lubrication. It keeps those three maintenance functions together in one product, with the product type clearly identified as heavy rotor oil.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The oil is designed to clean, protect, and lubricate instruments.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is designed to clean, protect, and lubricate brass instruments.
It contains 1.25 oz.