Thanks for all the input...
Sorry about keeping you up all night Egon. More coffee!!/w3tcompact/icons/smile.gif
From what I'm gathering so far, given that I don't have to pull anything like the Queen Mary /w3tcompact/icons/smile.gif, I'm thinking that I'll ponder this some more and keep my old beater '87 GMC that I bought for $500. I does the job for picking up supplies, etc.. it just isn't the kind of thing you want to use to cruise for chicks.. but I'm married anyway. /w3tcompact/icons/smile.gif
I'm also gathering that perhaps I'm a bit too paranoid about my tractor engine. Picture this.. it's a warm summer day.. or if it isn't I've used the engine and hydraulic heaters for at least three hours.. I start it up, let it stay at low idle for a minute or two, then bump it up to maybe 1200 RPM and let it sit for another few minutes. Then I put it in low gear, mid-range (just barely moving) and ease it out of the garage. I'll continue at this speed to the spot I intend to work in. Then I'll bump the idle a bit higher, maybe to around 1400, get off and have a cigarette (is it really true that those are supposed to be bad for us??) and won't do any work at all until the temp guage reads in the normal range for the machine. I thought this was the generally approved approach (well, perhaps minus the cig.) During the cig break I'll occassionally work the hydraulics a little to get them warmed up as well.
But with a diesel (I have trouble spelling it too!) road vehicle you just start it up and off you go, eh? What RPM does a diesel automatic pickup normally shift at? Seems like gently accelerating a pickup up to normal road speeds would be putting more load on than I do with my creeping slowly out to the work area with the tractor.
Correct me if I'm wrong.. the whole point of a warm up is to get the oil flowing properly, at the right viscosity, and to get various parts up to temp so they assume their normal relationship to other parts (e.g. piston and cylinder walls, etc.) ? Aside from that, you're good to go ... yes? But lacking that warmup, you're going to do some damage? Albeit perhaps only minimal damage, but it isn't great for the engine?
Thanks for helping this newbie along!
Bob