that stuff doesnt have any detergant in it. good for break in only. but it is loaded with zddp. ill use the spectro oil next time too, even tho iv got a case of zddplus sitting around, except ill just pick some up from work rather then buy summits re-badged version, save on shipping. my motor leaks a bit of oil so i think ill start with the Valvoline and the expensive additive like normal and top it off with the spectro as it leaks. eventually ill fix the leak. right now i top off with regular valvoline which brings my oils level of zddp down as im not putting any more additive in.