I've let my oil level drop to the bottom of the dipstick so I can top it up to full and measure the number of miles it takes to drop to the bottom again. I'm using the knurled bit of the dipstick as maximum and minimum. Tonight I topped it up and I was really surprised it took 0.5 litres and not the 1.0 litre I thought it was. Where did I get the idea it was 1.0 litre to fill from bottom to top?
That was my second choice. My first was how mine gets almost molten hot and i cant even touch it to check the level