I went and got the good dark NAPA block test fluid on Clay's recommendation and ran the engine until I felt the top hose on the radiator get nice and warm. I think the t-stat opened up, but I can't be sure. I put the test tube on there and clamped the overflow tube to ensure I was getting all radiator "gases." I pumped and pumped on that little bulb, but I had to keep pulling the tube off of the radiator filler tube to break the vacuum in order to get bubbles to come up in the tube. No change in color whatsoever!
This is puzzling me. I pulled the plugs, and there is no evidence of steaming on them. They were all the same color. Some had deposits on the plug body of the electrode gap, but I think the plugs are just old. I never checked the coolant level before I drove off in the rig the day I purchased it (dumb a$$ move on my part). I'm looking for other places that coolant could get into the oil. I hope that there isn't a crack in the block somewhere, and this sounds a little unreasonable to me since the mileage is so low.
Any ideas? I don't want to pull that head off if I can't ascertain that it is a problem. I think I'm going to top off the coolant and drive it while checking the oil over the next couple of days. I'll just drive it around town, and see what happens with the oil.
As seen on Expedition with TX plates: VEGETARIAN - An old Indian word for poor hunter
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