I had smoke burning at start up and started using motor oil saver added a full can to 3.3 liter of oil and had good results, to keep the results do i use it with every oil change ? And can i add MOS2 safely at every oil change because its much cheaper to use the oil i am using and adding MOS2 additive made by LM than using their oil with the additive in it, i change my oil every 2000km its an SJ rated oil