I took my great running 1989 f350 Tow truck out for a tow job yesterday. Towed the vehicle to it's destination and was on my way home. I stopped for fuel and continued on. Got back on the interstate and in about 3 miles, the old girl acted like she ran out of fuel. Tried to crank her back but wouldn't hit a lick. Then I noticed my WTS light wasn't lighting up. Must have something to do with it. I'm thinking it might be that cheap Borg Warner glow plug controller. And right before it died, I noticed my oil pressure gauge was very low, I read on here if you have low oil pressure they will not run-is that true ? I was registering on the low side of the good pressure side of the gauge. It was right there on the line. I was thinking about changing the oil today but never made it home. The funniest part of this breakdown was I called a good friend of mine to come help me get it off the interstate. He shows up and he's 3 sheets to the wind. We hook his Explorer to the f350 with a strap from dollar general. Now I'm praying. I said just go up the shoulder, easy, until we get to the next exit and pull off. We didn't even know if the explorer would pull this beast. He starts pulling me, realizes it will pull it and get out in the slow traffic lane. Takes me up to 70mph and pulls me 10 miles , like that, all the way to my house. It was scary and funny , all at the same time. I was white knuckling it all the way home. I havent done anything like that in 30 years. Any taker on my what my problem could be ?