What is the best cleaning fluid for a cycle cassette and chain?
Cassette & chain cleaner.
Bill Pilkington
Last Update a month ago

For cleaning any mechanical components, including cassettes and cycle chains, we recommend carburettor cleaning fluid. More detail HERE>>>>

One point to note is cleaning wax from a chain. Many cyclists use performance waxes to protect a chain. The issue can be that some waxes have a high melting point temperature. And that temperature can be higher than the maximum temperature achievable on an ultrasonic cleaner (80 degrees centigrade).
Never be tempted to add boiling water to an ultrasonic tank as this will damage the internal components.