[EagleChief]

Still trying to figure out my coolant situation. After my last cruise around town doing errands, the truck lost about 3/4 gallon of coolant. Filled it back up and drove it again - not as long as an interval, but a couple stops in town. Checked the coolant the next day, and it's down again. I can't tell how much, but I can barely see it when I look down into the radiator... maybe 6 inches down or so. And, I'm still getting white smoke and some condensation out of the exhaust.

So, I pulled the driver side plugs yesterday, and they are all good. Plugs 1, 2, and 4 (from front to back) looked as they should - plug 3 was a little darker than the others, but not coated in oil or anything. I should've taken pictures, but didn't.

I bought a coolant overflow reservoir to mount and run a hose to, just need to find the time to get that done. Once I'll do that, I'll top off the radiator again, add some coolant to the reservoir tank, then drive it around again and see what happens to my coolant level. IF I still lose coolant that way, I'm guessing it will be going to the shop for a rebuild or swap. I don't know where else to look/what to look for if that doesn't solve my problem.

I don't get any exhaust bubbles in the radiator and my oil is still looking ok. I do have blowby that is starting to show and make it's way out of the PCV valve and the oil breather cap. So, I know a rebuild is going to be due at some point.

Any thoughts?