Oil Capacity Mystery
The following happened on two mowers today (one has a Briggs 6.5 HP OHV, and the other has a Briggs 4.5 HP). Checked oil when cold and dipstick read well over full mark. Ran mower to warm up oil, poured old oil out. Measured old oil quantity: 20 ounces. Poured in 20 ounces of fresh oil and waited 10 minutes. Checked oil and dipstick showed well over full. The dipstick on both engines is embossed with info stating that the oil capacity is 20 ounces.
What gives? Am I correct that the dipstick should be stuck in all the way and turned until locked to get a correct reading?