So have a decent JD Loader and below 20F it seems quite appreciative of a snort of ether in the outer air intake. There seems to be an ether start button on the console but all the underhood bits have been burned away from its previous occupation possibly working in an active volcano. Napa has the Katz system for a reasonable price, generally use about 1 can a season on the hand held ones, (only driven now on sundays and in snowstorms) I had the boyz order it up but I'm wondering, I imagine the factory spot is someplace in the intake manifold for injection, is further upstream better? I'm thinking if a nice dilute mixture is enough to give a smooth start when its cold out then it'll give a slightly longer burn time. Or is this a case where the mfg knows what they're doing and just stuff her in the factory hole.