HDX your right the 6-221 became a water truck at Renfrew Div. in 1981 I was hauling logs with it one day . When I went into work the next morning the trailer and bunk were gone and a water tank was on it , I moved over to the 6-222 also later changed over to a water tank . The last time I seen them they were owned by IPL at Masachie Lake I've seen pictuers of them at Sarita on this forum. The 6-222 was a preloader and has the longer tank on it . The 6-221 came from Caycuse I don't know how old the engine was then , it seemed to run O K but it really didn't have any power Andy and I would leave Renfrew together in the morning he would have the 6-222 I would have the 6-221 loaded for Caycuse he would be breaking over the summit on the Caycuse hook up road starting down the hill to Caycuse . I would be breaking over the Harris Cr. summit starting down TR. 7, he would be three quarters of an hour ahead of me. Its probably the same engine in it. I'm not sure about which # the line horse was ,but I don't think it had been a line horse long when HBO was created and I think the 6-220 and the 6-221 were similer trucks it must have been a pretty good truck as the 6-224 was Renfrews line horse and I know it was a good truck when it was sent to Nanaimo Lakes as the surplace line horse .