My GF and I were driving our '87 Dolphin and our old Volvo from Mass down to Virginia. The Volvo is going to her family, and the Dolphin is coming west with us.
For the whole beginning of the ride, we stayed in sight distance of each other, switching off who drove what vehicle. I did the first stint in the Dolphin, and got pretty comfortable with the handling. We were doing mostly freeway driving, so I was maintaining a speed of about 50-55 mph, occasionally easing off the gas on the downhills and letting gravity get me up to 60-65 mph. The temp gauge looked good, and the Dolphin was handling well. We pulled off the freeway down in the beginning of NJ and switched off, and I took the Volvo.
I didn't make a light and we got separated. No big deal, we said. "Meet you at the first rest stop on the Turnpike!" (We were on 287 south.)
About a half hour later, my GF was driving along and said there was suddenly a sharp rise in temperature. She pulled over immediately, and the temp never got into the red zone, but had hit the top white line. She threw water on the engine to cool it, checked the coolant, and realized the resevoir was completely empty. She filled it with water and waited for me to come back, and we hobbled it slowly off the freeway (the good part of breaking down within yards of the exit) and parked it in a random parking lot and bought some coolant.
The thing is - I had the coolant flushed days before we left. It should have been full. My mechanic even pointed to me that my fan was defective, and we had that replaced.
We let the engine cool for about two hours and then restarted it. It was shaking pretty bad - I realized that we had probably blown the head gasket. It was Sunday night, so we left it parked and put a note of "sorry to leave our vehicle here, be back in the early AM" and found a hotel, and we called Good Sam ERS in the morning. Yup, it was the head gasket, at least. It's at the mechanic now, and I have my fingers crossed that the quick pull off the road meant that the engine never got damaged.
Here are my questions -
1) I know that my GF can be a bit of a speed demon, and I also know that we were probably cutting it close on the weight. (Ironically, we were to go to a scale about 20 miles south of our meeting spot, and shift stuff over to our car if necessary.) Could the combination of speed and strain caused a sudden upspike like that? (If the temp gauge were slowly building up over time, that seems more plausible. But maybe not.)
2) Why would we have NO coolant in the resevoir? Could it have been boiled off, or perhaps did our mechanic forget to fill it all of the way? I mean, I watched him do part of it as we looked at the fan, and I can't imagine we made it over 200 miles without any coolant in there.
3) In your experience, when/why have your Toys overheated?
I should be talking to the mechanic again later today, and should find out if a busted thermostat or water pump, etc. was to blame, and whether we can get on the road again without major engine work. If we do, I just want to make sure that this doesn't happen again!