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Auto Parts and Repairs
Fuel and Engines
Oil and Oil Filters
Combustion Engines

How do you flush an engine?

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2007-12-05 01:25:53
2007-12-05 01:25:53

An engine flush (in regard to an overdue oil change) is an additive that is put into the crankcase. Usually these take 3-5 minutes of the vehicle idling to dissolve gum/sludge/varnish deposits that build up when you go over the recommended interval. There is much dispute as to whether or not this service is any good at all. Some recommend using transmission oil instead of a brand of 'engine flush'.

A radiator flush, or transmission flush consists of an exchange of the coolant, or transmission oil. These are usually performed with a machine that hooks into your hoses or lines and when your vehicle is idling, circulates the fluid through the machine and transfers new fluid into your vehicle. These are recommended by the manufacturer at specific intervals.

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Do you mean flush the oil (not recommended) or flush the coolant?

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No they are completely different. A engine flush will only clean the engine a transmission flush will only clean the transmission. These two components use two different kinds on fluid therefor they can not be mixed together.

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Add Engine Flush to the motor oil at running temperature before changing the oil. After adding the product, allow the engine to idle for approx. 10 minutes. Then change the oil and the filter. Engine Flush is compatible with all commercially available motor oils. We recommend cleaning the engine interior with Engine Flush before every oil change.

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Not far, anyway. The engine flush is not engine oil ... its only purpose is to, hopefully, clean the inside of the engine areas. That's why it's called "Engine Flush" and not "Engine Oil". Get it out and put the new oil in soon.

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You will not damage the engine but you can damage the radiator if you use any high pressure. If you only flush and apply no pressure you will do no damage. Use a chemical flush and a water hose and you will be safe.


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