Just looking for clarification on using your Oil Change Flush (part #1216). Does it matter if the engine is hot or cold before adding the Oil Change Flush (assuming it doesn\'t matter)?And do I need to remove an amount of oil from the engine before adding the Oil Change Flush, as the engine would be over filled by the 16 oz can after adding the Oil Change Flush (assuming it doesn\'t matter since it will only be in the idling engine for about 15 minutes)?Appreciate any additional info you can provide.