# Best cooling system flush for removing rust from water jacket? **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 25, 2020, 2:44pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327 "2020-06-25T14:44:24Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Jack-Dak87](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jack-Dak87](https://community.cartalk.com/u/Jack-Dak87)\ **Post date:** [June 25, 2020, 2:44pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/1 "2020-06-25T14:44:25Z")
I specifically want to improve transfer of heat from combustion chambers to coolant. Any suggestions? ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 25, 2020, 3:21pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/2 "2020-06-25T15:21:30Z")
If you’re having cooling problems, I’d be checking other components, like thermostat, radiator, cooling fan, that kind of thing. Make/model/engine/year/miles? ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 25, 2020, 3:45pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/3 "2020-06-25T15:45:39Z")
This is the 87 Dodge from his other thread on failing emission check. ---
**Author:** ![Jack-Dak87](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jack-Dak87](https://community.cartalk.com/u/Jack-Dak87)\ **Post date:** [June 25, 2020, 4:07pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/4 "2020-06-25T16:07:36Z")
> [@texases](#): > > If you’re having cooling problems The cooling system works fine. No overheating, gauge reads normal. Radiator is 5 years old, water pump is 1 year old, thermostat is good, coolant is 50/50. I am concerned about the transfer of heat from the combustion chambers to the water jacket. I want to remove rust from the water jacket. That’s it. I am looking for suggestions for the best product or chemical for this very specific job, remove rust from the water jacket. ---
**Author:** ![Jack-Dak87](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jack-Dak87](https://community.cartalk.com/u/Jack-Dak87)\ **Post date:** [June 25, 2020, 4:09pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/5 "2020-06-25T16:09:26Z")
> [@texases](#): > > Make/model/engine/year/miles? 1987 Dodge Dakota 3.9L, 170,000 miles. Looking for best way to remove rust from the water jacket. Looking only for that very specific thing. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 25, 2020, 4:13pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/6 "2020-06-25T16:13:15Z")
Then I’d use Prestone “Radiator Flush + Cleaner” according to the bottle’s instructions, then put in the recommended amount of antifreeze and water in a 50:50 mix. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 25, 2020, 4:18pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/7 "2020-06-25T16:18:03Z")
Check on [thedrive.com](http://thedrive.com) they have a review of different products. But I do not know if they actually test them or not. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 25, 2020, 4:30pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/8 "2020-06-25T16:30:34Z")
Just don’t fall for snake oil salesmen selling expensive stuff to fix non-existent problems. ---
**Author:** ![Jack-Dak87](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jack-Dak87](https://community.cartalk.com/u/Jack-Dak87)\ **Post date:** [June 25, 2020, 5:11pm UTC](https://community.cartalk.com/t/best-cooling-system-flush-for-removing-rust-from-water-jacket/166327/9 "2020-06-25T17:11:41Z")
I’m thinking Evapo-Rust, either straight Evapo-Rust or Evapo-Rust Thermocure sold specifically for cooling system use, or white vinegar. I know the white vinegar works to dissolve rust, having used it to de-rust some hand tools. Works great for that.