Why do you say not to drive it short distances? I watched a youtube video awhile back saying that it takes a little while for the engine to reach ideal operating temp, but the way I see it, the engine operates for the same duration in the sub-optimal operating temps regardless. What I mean by that is; if you drive 5 miles and shut it down, it never reached 210 (or whatever temp it likes), but if you consistently drive 100 miles, it still has to operate cool for the same 5 mile interval to warm up. There are a lot of diesel car motors out there also that are used for short trips that don't seem to suffer from their usage to the best of my understanding. You're not the only person who has made that comment about short trips, I'm just not sure I've seen a technical/official reason as to why and a definitive cause and effect correlation. Not saying it isn't true, I would just like for someone to explain it a little better for me.