The 3 Best Heavy Duty Antifreezes (2022 reviews)

heavy duty antifreezes
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There are several advantages of having a heavy duty antifreeze. We are here to help you pick the best one for your purposes from all the best available products in market today.

Our review process:

Our Top Picks:

Zerex Heavy Duty Antifreeze
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K-Seal Heavy Duty Antifreeze
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Fleet Charge Heavy Duty Antifreeze
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Zerex Heavy Duty Antifreeze

Zerex Heavy Duty Antifreeze
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Not everyone likes to purchase antifreeze for their daily usage, but the Zerex Heavy Duty Antifreeze would be an anomoly. The zerex heavy duty antifreeze is direct and it works great. Make sure this fits by entering your model number. Moreover, the antifreeze is free shipping and it is yellow.

The antifreeze is good for corrosion protection, is ready to use and it works well. Also, it is a nitrite containing coolant designed to protect diesel engine cylinder liners from cavitation. Most importantly, the zerex heavy dutyantifreeze is designed for both gasoline and diesel engines.

Almost all buyers agree that the antifreeze cleans out all the lines, and the second makes sure all the flushing water/cleaner is replaced with fresh coolant. And, they strongly agree that the antifreeze is perfect for the ford 6.0 powerstoke. In addition, a few say that this antifreeze is intended for gm vehicles.

Top Customer Quotes:
  • This is good for a 4 year old gmc truck.
  • This is right at two years, give or take a couple of months.
  • This is compatible with your 2003 ford expedition.
  • This is a ready-to-use, 50/50 mixture.

K-Seal Heavy Duty Antifreeze

K-Seal Heavy Duty Antifreeze
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The best part: K-Seal Heavy Duty Antifreeze costs comparatively low and it is available to ship in 24 hours. The k-seal heavyduty antifreeze is leaking from the system, either externally or internally across the head to the cylinders, then the k-seal will follow it through the hole or crack and try to fix the leak. Coolant leaks do result in costly repair bills. Also, this is made for good stuff, is great with great stuff and it is distilled water.

Finally, the k-seal heavyduty antifreeze is best for large - capacity engines and it is tough.

Almost all buyers quickly discovered that the antifreeze is enough for up to 12 cylinder engines. And, a few strongly agree that the antifreeze makes something that will seal water leaks.

Top Customer Quotes:
  • This is light and it works for small leaks.
  • This will hold, but for now it is 100% the best.
  • Radiator leak, where circulating coolant leaks and causes the engine to overheat.
  • This is good for this ol coon ass.

Fleet Charge Heavy Duty Antifreeze

Fleet Charge Heavy Duty Antifreeze
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For a low asking price, fleet charging heavy dutyantifreeze has managed to overwhelm their customers by packing as many features as they could. And, this is highly recommended and it is perfect for plastic bottle. Make sure this fits by entering your model number. Lastly, the Fleet Charge Heavy Duty Antifreeze is designed for size 1 gal and it is good for country of origin.

Without any doubt, this antifreeze passed the test and had very satisfied buyers eager to share their experience.

Why We Like This:
  • Country of origin : United States.
  • Package dimensions: 28.956 h x 10.414 l x 19.558 w (centimetres).
  • Delivers what they promise.