What is the coolant capacity on a [DSM]?

The factory recommends a mixture of water and antifreeze, with the coolant comprising 30%-60% of the total mix. Higher concentrations of coolant are more suitable for low-temperature operation, since the "coolant" is actually antifreeze and anti-corrosion agents. Straight water usually cools the best, but doesn't provide protection against rust or freezing.

If in doubt, run a 50-50 mix of antifreeze and coolant. This is suitable for most driving conditions in the United States and Canada.

The following table lists the factory coolant capacities for DSMs. NT is non-turbo, T is turbo.

IMPORTANT:  Water cools better than antifreeze, but anti freeze will raise the boiling point of water and provide lubrication to the water pump.  Many SUMMER ONLY DSMs use 100% water and WaterWetter. There is debate wether this is enough lubricant for the water pump. If your DSM will see cold storage (freezing temps), ensure you have antifreeze in the system or you risk blowing out freeze plugs or cracking your block as the water turns to ice and expands.