I tried the spectro complete through my bike 3-4 oil changes ago completely happy on all accounts thanks to all the folks here on forum for their inputs, which I have learned to hold up to Bible standards.Have not been let down here so far.I read a thread a while back about checking the drain plug magnets after 1st 2nd and consecutive changes there is little to no build up any more. Big Thanks to those who have input for the better of all on this forum.