Radiator Burped

I filled the radiator in my 1987 Chevy G-20 Sportvan with Car Quest All Vehicle 50/50 antifreeze at 144,528.0 miles on the odometer and I burped the system.  Before, the van's engine was heating up rapidly.  Now, it appears that the engine temperature is stable.

Radiator Cap

Today, I got a radiator cap for my 1987 Chevrolet (Chevy) G20 Sportvan.  It's really low on antifreeze and I'm convinced that it needs to be filled from the cap instead of the reservoir first.  But my Haynes repair manual, which is coming in the next 36 hours.  I might as well not start the oil change until then.

Motorhome Turned Over and Car Levels

After more than a week, the motorhome turned on and the engine is sounding like it should.

And I took my 2008 Chevy HHR LS for about a 40 mile drive in Far SE Ohio and the computer has yet to display another diagnostic code. Now that it's off, the battery is reading 12.2V when it's off and 14.8V when on.  Both are in the normal range. I'm starting to suspect that the spark plugs are fouled?

The oil level looks good. But it might need a little Dexcool in the radiator reservoir. The brake fluid looks fine. And the milage on the odometer is 204,448 miles.