I just installed a Fumoto oil drain valve in my H6. I noticed that over at scoobymods.com they suggest notching the bottom of the valve so that you can get that extra
1/8 inch of oil out of the pan. Well I found something interesting in the service manual about the engine. The engine holds 7.2 U.S. quarts of oil, the refill amount is 6.1 U.S. quarts so logic tells me that the extra 1/8 inch of oil gained by notching the valve doesn't do all that much given there's still an extra quart in the engine. Just my .02- posted
20 years ago