Yeti, it should still work. Might take a bit longer to get that grey look you are looking for. I have found soaking the parts in a "REALLY" dirty diesel crank case oil helps some. I believe it is the small amount of sulfuric acid that develops during use that's why I prefera oil that has been needing a change 4 or 5 cycles ago --- more acid build up. There is just enough acid to ever so lightly etch (yet leave a sheen) the surface & I believe the filthy oil tends to impregnate the pores of the steel some. Maybe this helps with the light grey color. FWIW, Ken
