Originally Posted By: dnewton3
There are plenty of gasoline fueled million-mile vehicles from many popular brands. And while many are trucks, not all are. Sure - diesels are designed for long lifecycles. But gassers can do very well also.
Exactly. In certain examples, where we do have pickups and cars sharing the same engines (i.e. Chev small blocks, the old Fords, and so forth), those were fairly bullet proof engines in both applications. Taxis would go forever and a day, and so would trucks.
I would suggest the correlation isn't that these are trucks or any oil selection, but that they are work vehicles. These may be maintained fairly well (some aren't, certainly, but the sample size is sufficient to give us these anecdotes), driven enough to accumulate a huge number of miles, and do so in a relatively short period of time so the rest of the thing doesn't rot out or become obsolete (in a parts replacement sense), and replacing them when "fashionable" to do so doesn't make actual business sense.