[SpudRider]

You can certainly change the oil in the manner you employed. However, you need to continue adding oil, running the engine, and checking the oil level. You must repeat this procedure until the oil returns to the appropriate level in the sight glass within a few minutes of stopping the engine.

I find the job much easier to merely fill the engine with 1.7 quarts of oil. Repeated experience has proven this is the correct quantity of oil. The oil level doesn't have to be exactly precise. A little extra oil will not harm the engine, since it will be blown out the crankcase vent tube, pass through the oil separator, and collect in the clear tube at the left, front side of the engine. If you measure 1.7 quarts of oil, you will have enough oil to safely lubricate the engine, but not so much oil that it can't be safely removed by the crankcase ventilation system.

I fill 1.7 quarts of oil, and I don't have any oil collected in the tube beneath the oil separator.