Had my indy 650 out yesterday in the fresh really heavy wet snow and got on it ( 3\4 ) throttle coming up a slight slope and heard what i thought was the track skipping a tooth. now the track is 9 years old but the sled sat for 9 years and this is the first year it ran since then. (bought it not running this year) I took the chain case off and there was oil in there looked kinda dirty but no metal shavings or anything. but the chain seem a little lose maybe 1\2 an inch or so play. what does it sound like when the chain ratchets? what kind of oil should i put back in the chain case? I was thinking 90 wt gear oil. I also tightened the track till what i thought was 10 pounds of presure caused a 1 inch gap or so. but haven't tested yet. one last question has any one ever tried to fit a 2 snowmobiles in a 6 foot truck bed??? In my mind it seems like it could work with a lot of rope. has anyone tried this ? i am going to try soon.