Have a guy on island that is blending wvo with 5 or 6 "secret" ingredients he got from some German website. Runs it straight in his diesel vehicle (2000km no problems). Of course, since these are "secret" no one knows what they are. Since WD40 makes such an excellent wvo solvent figure part of the formula is naphtha and mineral spirits; probably RUG also. Anyone have any experience lowering wvo viscosity with naphtha, mineral spirits, RUG etc.
Cheers, Fred