Coolant exchange/transfer system for heating up diesel dozer in winter?

So we bought an 89 JD 550b Dozer last year and plan on plowing snow with it this winter. We live off-grid 2 miles up an old unmaintained logging road. Last winter I had a lot of trouble starting it when it got much below 20 degrees Fahrenheit. We live in northern MN so we regularly get low temps and lots of snow. We have limited electricity in the winter and the dang thing doesn't have a block heater anyhow...... A guy I met mentioned something about possibly setting up a coolant...

Coolant exchange/transfer system for heating up diesel dozer in winter?

Coolant exchange/transfer system for heating up diesel dozer in winter?