What is engine flush?

You add a product to your oil and let it circulate throughout the engine to clean or flush out all the built up grime and gook that occurs as a byproduct of oil. These byproducts can cause lubricating issues in the engine, and lubrication is key in any engine.

The idea is to get regular and routine oil changes with quality oil and a filter to avoid these issues. Engine flushes have their place, but be sure you have a need for it first and research your product before using. Many swear by them while others swear at them.