BandA wrote:Maybe they've purchased some engines for parts and leasing the others?
That has been the fate of some of the unmodified original Screamers. They may not be economical anymore for modifications to HEP generator and continued service, but nearly everything else in them is fair game to cannibalize for refurbishing some 2C-generation engines on-the-cheap (full rebuilds or well-worn rentals). It's usually customary for the rent-a-wrecks to get their wrecks ready for rent by perma-wrecking +1-2 additional wrecks. "The needs of the many outweigh the needs of the few" and all that.
Geep parts have a lot of matches to F40's too. So all those ex-NJT units that MPI took on to gut the carbodies into all-new MP20 "hermit crabs" end up with their Geep-generation stripped parts floating a portion of the F40 supply chain. It's one of the big reasons why there's been a conscious decision across most carriers including the T to sacrifice all their Geeps...but nearly all breathing F40-2C's are being rebuilt and freshly maintained by somebody for the long haul. If there's parts commonality between a couple classes of old makes...but only enough parts to sustain one make and not the other...pick the make with the best chances of longest-term survival and consolidate the resources even if that means something else has to go extinct in the process. That's sort of been the Faustian bargain railroads have made throughout history at deciding which power has to be sunset and which power lives on in near-immortality.