Like any other vehicle of a certain age stuff happens buying a used car will mean more upkeep probably more then you want first 6 months but after that less The 240 is a simple car compared to my 86 SDL much less to go wrong
All that said you can spend as much or as little on the car as time and money permit Like owning a home the list never really ends but priorties change
Just this week I thought I would look at littler issues Then i came out of a store and saw a puddle of coolant one new radiator and I think i'll worry about the little stuff later

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commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968
1986 300 SDL 427654
1999 Chevy Crew Cab Dually 225423
1986 300 SDL 287000 Dad's
1987 190 Turbo 158000 Mom's (my inheritance)