I just changed the oil for the first time in my Toyota 4Runner Sport V8. Newly acquired vehicle. I drained old oil, installed new drain plug gasket, drain plug bolt, new filter and 6 1/2 quarts of 5-20 oil. Started engine up, checked for leaks, and then shut-off engine for a few minutes on level surface. Using engine dipstick, I could not find any measurable oil on dipstick. Drove a couple miles. After couple minutes, again checked oil. There is no residue of oil on dipstick! I am totally perplexed.:wtf: