G
Guest
·...wondering if this was ok to do? i went to mobil to get my oil change and i noticed i have alot of sludge and buildup in the engine so they added this heartland oil system cleaner .The Originalâ„¢. This safe, petroleum based formula gently dissolves and removes harmful sludge from the crankcase without kerosene or alcohol. Safe for all vehicles....and they let my engine run for 5minutes then they added mobil high mileage engine oil and oil filter...now i just wanted to know if this was all ok to do for my car?