thanks barry, have never used the fast, always the slow but i'll give it a try. i actually do it because, and dont take this the wrong way but i always felt the 700 was a little weak or too much water in it. its a good product and does clean ok and i used it out of the jug for years. once i tried the rm and sikkens stuff, which is actually made by henkle, it was a night and day difference. theirs i dont think has much water in it or atleast doesnt seem to. its much stronger and cleans better. the little addition of the reducer to yours gives it just enough kick to make it as good or better than the henkle product. it will take off oil, grease, adhesive and leave the part alot cleaner with less effort. a good example is on a black or dark paintjob that you will be clearing twice and sanding between. on an occasion when done, in the sun i have found finger prints or cloudy areas from sanding dust trapped between clear layers that didnt come completely off and i know i wiped the area to death. i have basically eliminated that with this change. i also use it to wipe down all my sanded primer before base. it just takes a real good product and makes it better imo. i also make a weaker version as well for wiping down airbrush work or basecoat directly. i use the zep glass cleaner concentrate from home depot. i mix 4 parts rts glass cleaner with 1 part 700. gives the glass cleaner a little extra kick to make that work better. in the end that is very similar to hok's kc-20.