Pro-Blend - 40 Below Raidator Treatment - 16 oz

Pro-Blend – 40 Below Radiator Treatment – 16 oz

Pro-Blend’s 40 Below is a high-performance radiator treatment designed to reduce engine temperatures by up to 40°F. Ideal for street rods, racecars, RVs, marine engines, and other high-performance motors, it helps maintain safe and efficient cooling operation.

When used in a full system with 80% distilled water and 20% ethylene glycol, two 16 oz. bottles will maintain coolant temperatures between 180–210°F.

Key Features:

• Temperature Reduction: Lowers temps by up to 40°F
• Performance Range: Maintains 180–210°F
• Compatibility: Works with antifreeze, but best without
• Warning: Never use with Dexcool
• Applications: Street rods, RVs, racecars, marine engines, high-performance motors

Sold As: 16 oz. Bottle