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| Product | Premium Premium | Extra Extra | Extreme Extreme |
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| Corrosion Protection |
Hybrid OAT Premium | Proshield OAT Extra | Proshield OAT Extreme |
| Formulation | Free of the additives Phosphate and Amine; low in silicate Premium |
Free of the additives Nitrite, 2-EHA, Amine and Phosphate Extra |
OAT corrosion inhibitor with Nitrite and Molybdate Extreme |
| Fleet |
Agriculture Construction Marine Mining Trucking* Premium |
Agriculture Marine Mining Mixed Fleet Trucking* Extra |
Agriculture Construction Marine Mining Trucking* Extreme |
| Service Life |
6yr 12,000 hours 960,000km 600,000 miles Premium |
6yr 12,000 hrs 960,000km 600,000 miles Extra |
8yr 5,000 hours 1,200,000 km 750,000 miles Extreme |
*Selected applications only
One unique key to HD Expert coolant is the ProShieldTM OAT Corrosion Defense system. These proprietary blends deliver exceptional service life, with no need for SCAs or extenders. They are specially-formulated to protect modern engines built with heavy use of aluminium and magnesium, and their organic inhibitors are safer to handle and for the environment. Fill out the form to see how your coolant compares, and how ProShieldTM can improve your fleet today!
Whether it’s servicing older engines, topping-up, or operating in extreme temperatures, learn to select the best HD Expert product for your coolant needs. Our easy-to-read whitepaper helps you unlock the most value for your fleet, with lower maintenance costs and a longer engine life.
