The recommended engine coolant for a 2005 Suzuki DRZ400 is a mixture of 50% distilled water and 50% ethylene glycol-based antifreeze. Suzuki specifically recommends using their Genuine Engine Coolant, which meets or exceeds all applicable industry standards and provides excellent corrosion protection for the cooling system components.
Here's the detailed recommendation:
Coolant Type: Ethylene Glycol-based Antifreeze
Concentration: 50% Antifreeze + 50% Distilled Water
Recommended Brand: Suzuki Genuine Engine Coolant
Make sure to follow the manufacturer's instructions when mixing the coolant and follow the maintenance schedule provided in the owner's manual for regular coolant changes to maintain optimal engine cooling performance and prevent any issues.