When you manage a fleet of semi-trucks or operate heavy-duty construction equipment, you can’t afford unexpected downtime. One of the most overlooked — yet critical — components of engine health is the coolant. Red 50/50 OAT Antifreeze stands out as a reliable, long-life solution designed to meet the extreme demands of heavy-duty diesel engines.
Why Red 50/50 OAT Coolant Is Ideal for Heavy Equipment?
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✅ Pre-Mixed Convenience: No dilution needed — just pour and go.
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🧪 Organic Acid Technology (OAT): Offers superior corrosion protection without the use of nitrites, silicates, or phosphates.
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🛡️ Extended Life Formula: Helps reduce maintenance frequency with longer drain intervals.
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❄️ All-Season Performance: Delivers freeze protection down to -34°F and boil-over protection up to 265°F.
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🔧 Low Maintenance: Fewer additives needed over time, making it a cost-effective choice for large fleets and construction sites.
Built for Tough Work Environments
Whether it’s hauling cross-country loads or operating in rugged, off-road conditions, your engines need coolant that can handle heavy-duty heat cycles and vibration. Red 50/50 OAT Antifreeze is designed to protect modern engine components — including aluminum, iron, and copper — from pitting, rust, and scale buildup.
Order Online in Bulk
For fleet operators and mechanics who demand consistent performance, this coolant is available in:
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55-Gallon Drum – A great fit for service centers and mid-sized fleets.
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275-Gallon Tote – Ideal for large operations that want to save on cost per gallon.
