I've been dropping oil in thru the top filler cap. Its a hassle cause I have to drop a "1 1/4 rubber hose thru the top rad access panel and into the filler hole. If you drop your oil in the lower access,it'll take forever. And I insert a funnel in the hose which makes dropping oil easier. Yeah, I'm not crazy about going singlehand in a shop, nor am I crazy about going up north to the oilsands. Camp life has worn a hole in my backside.