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AMSOIL Heavy-Duty Antifreeze & Coolant

Product code : ANTHD1G-EA

4.8 star rating
Read 25 reviews
Read 25 reviews

  • Fully formulated: DOES NOT require the use of supplemental antifreeze/coolant additives (SCAs) or extenders
  • Protection up to 1,000,000 miles, 20,000 hours or 8 years, whichever comes first
  • Ethylene glycol 50/50 pre-mix formulation
  • Proprietary hybrid organic acid technology (HOAT) formulation is further enhanced with anti-scalant, anti-fouling and water-pump lubrication additives
  • Phosphate-, nitrite-, silicate-, borate- and amine-free
  • Compatible with all other antifreeze and coolant colors
Warning - Click here for Proposition 65 information for this product
Product Overview

AMSOIL Heavy-Duty Antifreeze & Coolant



Provides superior heat transfer and excellent protection against corrosion, cylinder-liner cavitation, freezing and boil-over. Compatible with all other antifreeze and coolant colors and all plastics and elastomers (hoses, gaskets, etc.) found in cooling systems. Provides superior protection for aluminum, steel, cast iron, copper, brass and solder alloys.

See the Product Data Bulletin for full details.

Outstanding Cooling-System Protection

  • Superior heat transfer
  • Excellent protection against corrosion, cylinder-liner cavitation, freezing and boil-over
  • Virtually eliminates scaling problems
  • Maximum protection in extreme temperatures and operating conditions
  • Long-lasting protection for up to 1,000,000 miles, 20,000 hours or 8 years, whichever comes first, in heavy-duty and off-road applications

AMSOIL Resists Corrosion

In third-party, industry-standard testing, cast-iron and copper plates protected by AMSOIL show virtually no signs of corrosion.HH

AMSOIL Resists Corrosion – In third-party, industry-standard testing, cast-iron and copper plates protected by AMSOIL show virtually no signs of corrosion.

HHBased on results of the ASTM D2570 corrosion test.

AMSOIL Resists Cavitation

In third-party, industry-standard testing, cylinder liners protected by AMSOIL show virtually no signs of cavitation.II

AMSOIL Resists Cavitation – In third-party, industry-standard testing, cylinder liners protected by AMSOIL show virtually no signs of cavitation.

IIBased on results of the ASTM D7583 cavitation test.

See the Product Data Bulletin for full details.

Technical Specification

AMSOIL Heavy-Duty Antifreeze & Coolant

Data Bulletin

Warranty

SDS



Product Reviews

AMSOIL Heavy-Duty Antifreeze & Coolant

4.8 star rating
Based on 25 reviews
Based on 25 reviews
See all customer reviews
  • 5 star rating
    good HD Antifreeze
    By  AUGUST,  a  Verified Buyer  from  Reno  on  June 04, 2024
    Everything you needful a Diesel App.******* good stuff! I recommend
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  • 5 star rating
    Extreme duty III
    By  CHRIS,  a  Verified Buyer  from  Roosevelt Utah  on  April 13, 2024
    See above
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Highest Quality Coolant On The Planet!
    By  AmsoilFanboy,  a  Verified Buyer  from  Northern California  on  March 30, 2024
    This is hands down the absolute best coolant on Planet Earth! I'm never going back to OEM coolant. This far exceeds my OEM coolant by a long shot. There is no comparison. This is just the absolute best. I'm using this in my 2016 SCION iM, 2013 RAV4 Limited, and 2016 Camry SE. It's HOAT just like OEM, but wayyyyy better. If you're thinking it over, think no more, and just buy it already. You won't regret it. I highly recommend this coolant.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Superior coolant
    By  Jack,  a  Verified Buyer  from  Upstate NY  on  January 29, 2024
    After I pulled the original radiator from an 87 Olds Cutlass 442, which was leaking very badly, I dropped a new radiator in and filled the system with Amsoil Heavy-duty Antifreeze and some Amsoil Dominator. Replacing the radiator was necessary to stop the leak, but the AMSOIL products reduced the running temperature...a pleasant surprise.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Always Amsoil
    By  FRED,  a  Verified Buyer  from  Holyoke, CO.  on  November 29, 2023
    I had to top off the cooling system in my 2014 Ram 3500 with 209K miles. I switched to Amsoil Heavy Duty when I had the cooling system flushed quite a few miles ago. As with all the lubrication needs on my Ram I trust Amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Heavy duty coolant
    By  EDWARD,  a  Verified Buyer  from  Baytown, TX  on  October 29, 2023
    I live in Southeast Texas, I run this product in my diesel pickup and I to say it keeps my truck in excellent working condition, daily driving to towing I’m ready.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great stuff
    By  JERRY,  a  Verified Buyer  from  Ky  on  September 05, 2023
    Good coolant. It's expensive but the good stuff always is. It depends on whether you want something that works and does what it says or something to just get by. If u have a nice car or 1 you care about and u want to keep it protected and running good this stuffs for u. If u need something to just get by then this stuff might be to high. But it is a great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Glad I bought it
    By  Mona,  a  Verified Buyer  from  LA  on  August 29, 2023
    I was skeptic about this product being different enough to notice. After flushing system and putting in this antifreeze, the temp on my truck dropped 15 degrees and this was on a 108 outside temp. I was shocked. if you have a bunch of miles on your vehicle, do not hesitate. I wish I would have done this a little earlier.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 2 star rating
    Would not buy it again
    By  MEJIA,  a  Verified Buyer  from  Texas  on  August 03, 2023
    My car still runs pretty hot. I should have just ran at least one concentrated dexcol. I wasted money to try.
    Bottom Line
    No, I would not recommend this to a friend.
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  • 5 star rating
    Outstanding coolant helped reduce my operating temp 😎👍
    By  KEVIN,  a  Verified Buyer  on  August 01, 2023
    Outstanding coolant helped reduce my operating temp 😎👍
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?