hey i put 6 quarts in (5.7l) and it's over the line at the 80 degrees reading. there are min/max marks on my dipstick at 30 degreees and 80 degrees. is this overfilled now? the chart says for the 722.4 it's 6.0L for an oil change. what's the easiest way to remove the excess? i'm afraid to use my siphon for fear of contaminating the fluid.