At the norcal meet f150bob had some S100 and it was white. Mine has always been yellowish, from the time I bought it. Did either of us get a bad one or something? Both apply and perform the same. :nixweiss
I went to the Harley store yesterday and went through 9 cans of S100. The parts guy thought I was nuts. They all had yellow tint to them. I do not think that it is anyting to worry about.