i just did mine today with genuine mazda oil filter and 5/40 fully syn oil i also add wynns lifter treatment to a warm engine and never get hl clatter
Did you add it before oil change or after?
i just let the engine warm up then add it as it says on the bottle
Thanks - did you add it before the oil change or after?
i.e. - is it in the new oil, or did you use it as a flush?
after the oil change just warm engine up with your fresh oil in it and then add it