What type of coolant is recommended by the manufacturer for a 2001 dodge ram 2500 5.9L diesel?

The 2001 Dodge Ram 2500 5.9L Cummins diesel engine requires a high-quality, heavy-duty diesel engine coolant. The manufacturer's recommendation is typically for a coolant that meets Dex-Cool specifications, but more specifically, it should meet the Cummins recommended specifications. This is crucial because standard Dex-Cool might not be sufficient for the demanding conditions of a diesel engine.

Don't just rely on "Dex-Cool." Look for a coolant explicitly designed for heavy-duty diesel applications and that meets or exceeds Cummins' recommendations. Consult your owner's manual for the precise specifications. The manual will specify a certain concentration (usually a mix of coolant and distilled water) for optimal performance and protection against freezing and overheating.

Using the wrong coolant can lead to serious engine damage, including corrosion and cavitation.