oil is good, must use it though

figured out this morning why the car has been running a bit poorly. I have been meaning to check the oil for ages. So, this morning I finally pulled my dipstick out and lo - 4mm oil visible. Most of a bottle of oil later and broom is running much smoother. Will I ever learn to check more often? Even when I know broom uses oil, nearly 10 yrs, yeh, no excuses, I know she uses oil. Will I blow up the engine instead? only time will tell.