The machines that resurface ice skating rinks, famously known as Zambonis, need special lubricants that stay fluid at -10°C while operating in one of the harshest environments imaginable: constantly surrounded by ice, water, and snow. These machines have dozens of moving parts including hydraulic systems, chains, and augers that must work smoothly despite being splashed with freezing water throughout their operation. The grease and hydraulic oils used must resist both the extreme cold and contamination from ice melt water, which would cause ordinary lubricants to turn into useless sludge within minutes. A single ice rink can resurface its ice 10-15 times per day during busy periods, so these specialized cold-weather lubricants need to perform reliably through thousands of freeze-thaw cycles each season.