I have the L3302DT with 11hrs and it's my first diesel engine. It's 1yr old and I got permission from Kubota not to have the 50hr service after the 1st year ownership. I did go over the periodic maintenance and was wondering what to look for from the diesel fuel in the bowl. Can i tell from the bowl that its okay or not ok? Do I need to add the gel additive to the tank and I have an extra 5 gallon container. Both have the additive I put in last November. I'm located in PA. On the east coast, so it gets below freezing here.