I dunno how similar it is to DSM lifter tick but I heard a lot of people add half a quart of tranny fluid to your oil and it will clean all the build up off. You shouldn't drive around like that for long though because it will eat any seals. Just rinse it out with fresh oil. I wouldnt try it though unless it got really terrible but I heard of some DSMs having such bad lifter tick that it will trigger the knock sensor.