drain the oil, put the known amount in and mark the stick wherever it reads the oil line after of course your +1 is in the filter
Exactly what I did....however the oil level barely reads on the dipstick. I can either use a longer dipstick (21" vs 19"); or cut the tube 2", then the oil will be in the correct spot. Alternatively I can just cut off 1" then re-mark the dipstick. Any suggestions ? Thanks.