I'm gonna get a new saw 'soon' but for now need to keep using what I got - a Poulon. I seem to go through a tank of oil more or less in pace with a tank of gas, but I'm not sure enough is making it to the chain. The chain never looks oily, it usually looks gummed up with sap and sawdust. I try the trick where you point the bar at a tree and rev it and look for oil coming off, but never see it. I do see oil gunked up with sawdust under the cover so it is coming out, just not getting all over my chain. I clean the oil ports, clean the bar, etc. but it doesn't change anything. The saw also does not have an adjustable oiler. So what to do? Try a thinner oil? Can I cut my existing oil with some kero? I'm actually thinking I'd like to try and flush out the port and line but not sure how? Could I put some kero in an empty oil tank and shake it about?