An engine flush is a way of helping remove carbon and sludge build up in the engine, all you do is add a bottle of brand name flush to the oil and run the engine until normal operating temp then do an oil change, always follow the instructions on the bottle of flush, you do not have to do this every service, so if it has not been done it would not hurt to do it.
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Tuesday, September 29th, 2015 AT 2:46 PM