Haha I do the same thing
It goes along with the freezer tests, the color tests, the oven tests, the frying pan tests, etc. When I'm changing the oil, I always admire the feeling of rubbing my fingers together after lubing the oil filter gasket, or just when I randomly pull the dipstick to check the oil
I'll never forget the night my gf opened our freezer to find a jug of M1 15W50 staring her in the face!!