OK guys I need some help figuring this out.
Last week I posted about my truck and how I thought my HGs were bad because I noticed a loss of coolant while towing. Then I thought, well, I recently changed my thermostat and hadn't driven the truck much so maybe it was just air in the system. Here is the latest info I have. Towed again this weekend and after the truck sat for a day and a half I checked the coolant. It was slightly low so I added about a cup of coolant. Thats it, a cup. Towed home and let the truck sit overnight. I checked the coolant this morning and there is ZERO loss of coolant from the tow home. In fact, it is slightly higher than where I filled it to. I am so confused!!! Help me figure this out!!
Oh, and there is no puking and no "tea kettle whistle".