Engine Flush: Is It Good or Bad for Your Engine? (Plus See How To Do It)

5 Benefits of an Engine Flush

1. Prepares Your Engine for New Oil

An engine flush helps loosen sticky valves or rings and remove harmful sludge and other contaminants.

By cleaning the engine prior to installing fresh oil, you ensure the new oil functions as intended and delivers maximum protection. The oil won’t last as long or protect as well if it must contend with sludge and deposits from the previous oil.

By the way, we don’t require use of AMSOIL Engine and Transmission Flush before switching to AMSOIL synthetic motor oil, but we recommend flushing your engine if you want to give it a fresh start.

2. Helps Increase Fuel Efficiency

Contaminants circulating throughout the engine can lead to oil breakdown and increased viscosity – and higher-viscosity oil requires more energy to circulate throughout the engine.

Sludge and deposits on engine parts can also increase resistance, which wastes fuel to overcome. Cleaning the engine helps ensure parts move efficiently, maximizing fuel economy.

3. Helps Reduce Emissions

If deposits in the piston-ring lands cause the piston rings to stick, oil can migrate into the combustion chamber, where it burns.

This not only leads to harmful deposits, it also increases exhaust emissions as the burned oil exits the tailpipe.

A good engine flush helps free stuck rings and reduce oil consumption, in turn reducing emissions.

4. Helps Reduce Heat

Excessive heat is bad for your engine and the oil.

Extreme heat reduces engine efficiency while increasing the rate at which the oil oxidizes (chemically breaks down). Sludge and deposits act as insulators that prevent the engine from dissipating heat as designed.

Flushing your engine helps ensure it manages heat properly for optimum efficiency and oil life.

5. Convenience

This might not apply to every engine flush, but it applies to AMSOIL Engine and Transmission Flush. It delivers results after just one application. And it only takes 10-15 minutes to use.

Plus, you can safely use it in gas or diesel engines and automatic transmissions.

While some solvent-based engine flush products require a cumbersome disposal process, AMSOIL Engine and Transmission Flush uses a detergent-based formulation. As such, you can dispose of it easily with waste oil.