[elhigh]

I've been using EOC, bump-starting and other hypermiling techniques for decades on the same vehicle and can tell you that it doesn't appear to have affected the longevity of my vehicle negatively at all.

Since my truck is approaching "outlier" territory on the graph of vehicle ages, you start to think that mine was either built on a Wednesday or that hypermiling is sufficiently gentler to a vehicle that, other factors being equal, it lasts longer than a non-hypermiled vehicle.

When I add a grille block (need a new radiator first), I'll try it out for fifteen years or so and get back to you whether it seems to have killed the truck.