[me and my metro]

I work on a fleet of trucks and over the years antifreeze has evolved. We use seven different coolants in our fleet. I know that some companies make a one size fits all coolant but I choose to use whatever the OEM recommended at the time of manufacture. The easiest to spot leaks is the gold coolant used in the International powered Ford trucks. When it dries it leaves a white crust so it is easy to trace back to the source. The biggest source of leaks on our truck fleet is EGR cooler hose connections. Even the factory silicone hoses have trouble with the heat. Hose clamps have become better over time and we use the best stainless screw clamps available.