I was wondering who the first one would be to come up with some molasses joke, and here it had to be you, Richard !

Pat, it seems most machine shops have been banned by the EPA or whomever from using the strong stuff they used to use years ago to hot tank motors. The ones I have gotten back in recent years show a little rust inside the cooling passages, and that is what we are trying to get rid of before the machine shop gets it.

Supposedly, the molasses you need to buy are the ones you get from feed and grain stores and it comes by the 5 pound buckets or so. It is used in animal food for livestock, I think. When it ferments it turns into something like Ospho and attacks the rust. It is a slow process and if you heat the mixture it works faster, so in Florida we should be able to put it out in the sun and let it do it's thing.

What about plugging the water ports and dumping swimming pool acid in there? I have heard that will clean out the rust.

Don