An engine flush washes the gunk out of your car's engine – and most cars will never need one, says an engine expert. "If you do your oil changes regularly you shouldn't have a need for an engine flush ...

There are a few different solutions you can use to remove sludge and other contaminants from your car's engine, but soapy water should not be one of them.

I just took my father's 2010 Hyundai Accent hatchback in for an oil change after a long time between changes (8,000-10,000 kilometres). It was down more than three quarts. The mechanics told me that ...