Does anyone have a particular oil pump that works well with the 8.1s? I purchased the Moeller 7qt pump that has garden hose attachment and a variety of tubes that go down dip stick. It works great on the Genny although is painfully slow getting the hot oil out of the 8.1s to a point and then just stops. I also borrowed a friends homemade electric pump on a 5 gal bucket with both attachments and his did not work either. Only thing that works for me is a manual hand pump that is not very fun.....Thanks and Happy New Year!