Dipstick did not have foam on it. I found the stuff when I was checking my oil at the gas station and had to put a little in. I must say, I will not be happy if I have a blown HG or other problem since then engine has a whole 2 or 3 thousand miles on it since I rebuilt it, new everything including radiator and all hoses. I think I will adjust my valves again today and I will examine some stuff while I have it apart. Frustrating. I usually drive it from home to school (about 1 mile), school to work (2 mile) and work to home (3 mile), so it does not see much use during the week unless I am going out to friends houses in the country or am cruising around. Weekends it gets driven a lot more though.