"extensive wear" can also be "lack of maintenance" .... highly unlikely to be 250,000, be a detective - if it's an original engine and it doesn't appear to have been rebuilt, unlikely to be over 100,000
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics