I took my 81 300SD up Stevens Pass and back down the North Cascades Highway this weekend. Yes, the temp gauge does climb a notch or two. Especially when I had it climbing the 6% grades at 65-70. Kind of fun with that turbo charged diesel pulling along. Never thought I would see that day when I would pass a line of Chevs and Chryslers in the old Benz, but sure enough. This one would accelerate uphill.
You must live near where I see those bumper stickers reading... 'We're all here, because we're not all there'?