Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula
Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula
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Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula

4.8 stars out of 589 reviews
(4.8)|
589 ratings
Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing FormulaIso HEET Water Remover Injector Cleaner 12 fl oz2 pack Iso HEET Water Remover Injector Cleaner 12 fl oz4 pack Iso HEET Water Remover Injector Cleaner 12 fl oz
Pack Size:Single

Key item features

  • Premium Antifreeze: Iso-HEET is the leading brand of premium gas-line antifreeze, recognized for its effectiveness in fuel system maintenance.
  • Superior Absorption: This formula absorbs five times more water than standard gas dryers, efficiently removing moisture from the fuel system.
  • Corrosion Prevention: It actively prevents rust and corrosion within the fuel system, contributing to engine longevity.
  • Engine Compatibility: The solution is suitable for use with all engine types, ensuring broad applicability.
  • Cold Weather Performance: It maintains clear fuel lines during cold winter conditions, preventing freezing and blockages.
  • Enhanced Performance: The product improves overall vehicle performance by ensuring a clean and moisture-free fuel system.
  • Convenient Size: Packaged in a handy 12 fl. oz. bottle, it offers ease of use and application.
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Customer ratings & reviews

4.8 out of 5 stars
stars589 ratings209 reviews
How item rating is calculated
  1. 5 stars85% (502)
  2. 4 stars10% (57)
  3. 3 stars3% (16)
  4. 2 stars1% (5)
  5. 1 star2% (9)

Reviews summary

Pros
  • : Helps engines start and run correctly during winter.
  • : Offers good value at this cost.
  • : Removes water from gas tanks to prevent rust and corrosion.
  • : Prevents water from freezing in engine lines and improves operation.
  • : Operates smoothly in freezing temperatures.
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Showing 1-3 of 209 reviews

Nov 22, 2025
haley
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

It works

This definitely works. I got my sisters car after she passed away and the car didn't have a gas cap. We had a storm come through and the door of the tank ended up opening. I had just replaced the fuel pump last year and I thought for sure I messed it up again. I started the car a few days later just for it to cut back off. I asked around to a few people I know who works on cars and one of them told me about this. I really didn't think it would help. I poured it in the tank and later that day the car started back up. May not be the same story for everyone but it definitely worked for me.

Helpful?52IQYVPSEB2S16879747
Nov 19, 2025
Buddy
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Gets The Job Done!

I filed up my SUV one morning on the way to work. Everything was fine until I headed home that evening and noticed the hesitation and sputter at interstate speed. Sure enough the check engine light came on and I suspected it was water in the gas. Did a little research and found that water is heavier than gas and if you park for a while it will settle to the bottom of the tank. This explains why the sputter happened later rather than sooner. ISO HEET was the %231 recommended cure. I tried it and sure enough the sputtering stopped and after several miles the check engine light went off. Very inexpensive fix. Nice! Probably wouldn't work with a ton of water in the fuel. But if you just filled up and the sputtering starts, this would be the very first thing I'd try…

Helpful?52IQYVPSEB2S16879747
Jan 19, 2026
David
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

removed water and moisture from lines just fine

used for engine line with water and seemed to relieve the situation. So, it worked for me in a Honda van. Drove around for about 5 minutes just to distribute it and the next day is when i could tell it worked.

Helpful?52IQYVPSEB2S16879747