10 Best & Most Reliable RV Antifreeze (in 2021)

Going camping in the winter and not sure if your current coolant will be sufficient? These 10 RV antifreeze will definitely do the job!

I’m a huge sucker for winter camping. The unbelievably fresh air, sparkling white snow, and the sound of snow crunching… nothing beats it. But without the right RV antifreeze, your beloved trip can turn upside down fast.

Not every coolant works when the temperature drops below 32°F (0°C). Imagine being stuck in the middle of nowhere in freezing cold weather because your RV can’t start.

That’s a situation worth dodging! The 10 RV antifreeze I’ll cover works in temperatures all the way down to -35°F (-37°C) which should definitely suffice 🙂

I’ve also written another article covering how to winterize a camper. It might be worth a read if you’re going to camp during the winter months.

1. Valvoline Zerex Original Green

Source: Amazon

Valvoline is probably one of the best known brands that make RV antifreeze – and for a good reason. Their 50/50 antifreeze is ready-to-use and will provide superior cooling for passenger, light-duty, and heavy-duty vehicles.

It can be used in all vehicles that specify traditional green coolant, and it’ll keep your vehicle safe from any corrosion or rust built-ups.

You won’t have to worry whether it’ll work in cold weathers. It’s a 50/50 antifreeze meaning it’ll work in temperatures as low as -35°F (-37°C).

Still not convinced? Then take a look at the 1.211 people on Amazon that’ve tried the antifreeze and given it 4,7 stars out of 5 on average 🙂

Pros

  • Works for a lot of vehicles
  • Helps prevent rust and corrosion
  • No need to add water

Cons

  • More expensive than undiluted

2. Valvoline Multi-Vehicle Antifreeze

Source: Amazon

The Valvoline Multi-Vehicle Antifreeze works for all vehicles – hence the name 🙂

It’s also a 50/50 antifreeze that’ll protect you and your RV from temperatures all the way down to -35°F (-37°C) and all the way up to +265 °F (129 °C) so you’re well protected from all kinds of weather.

The reason it works for all vehicles is because it’s a Hybrid Organic Acid Technology (HOAT) coolant. It’s not seen in any other coolant which makes the Multi-Vehicle RV antifreeze ideal if you want to make sure you’re buying a coolant that fits your RV.

It comes premixed in a 1-gallon can. You can also get a undiluted coolant that you’ll have to mix up with water but with the Valvoline you don’t even have to mix it.

Pros

  • Works for all vehicles
  • Comes premixed
  • Very affordable

Cons

  • Really no downsides

3. ACDelco GM Original

Source: Amazon

The ACDelco GM Original can be used with conventional cooling systems. If your vehicle isn’t designed to use DEX-COOL, you’ll need to replace the coolant every 2 years or 30.000 miles. However, if your car IS designed for DEX-COOl, you can change it every 5 years or 150.000 miles.

Furthermore, the RV antifreeze has an 8-year long shelf life so you really don’t have to worry about an expiration date when not using it.

It’s a 50/50 pre-mixed coolant so you don’t need to add water, and it’ll work all the way down to -35°F (-37°C). In other words, you can drive to Antarctica and still be covered from top to toe 🙂

When taking a look at the Amazon link below, you’ll see a tab called amazonconfirmedfit which allows you to put in your car’s information and double check if it works for your car as well.

Pros

  • No need to add water
  • Lasts for 5 years
  • 8-year long shelf life

Cons

  • Might not work for all cars

4. PEAK OET Green Concentrate

Source: Amazon

The PEAK OET Green RV antifreeze is designed for North American vehicles including Ford, GM, and Chrysler that require a green conventional coolant.

There’s no guarantee that it’ll work for other vehicles than the ones mentioned above but if you’re in doubt, use the amazonconfirmedfit guide over on Amazon.

Compared to the ACDelco GM Original coolant, this one only has a service life protection of 2 years or 50.000 miles. However, that’s only guaranteed if you’re emptying your tank completely and refilling it with 100% PEAK OET.

This isn’t a premix so you decide the concentration. If you’re filling it up with 70% coolant and 30% water, then it’ll work all the way down to -84°F (-64°C).

Pros

  • Works down to -84°F (-64°C)
  • Relatively cheap
  • Well known brand

Cons

  • Doesn’t work for all cars
  • Relatively short service life
  • Doesn’t come premixed

5. Prestone Antifreeze Coolant

Source: Amazon

If you thought the 5-year service life was incredible, then you’ll fall of your chair knowing the Prestone RV antifreeze has a 10-year or 300.000-mile guarantee.

It comes 50/50 pre-diluted which is 50% coolant and 50% water. It makes it the perfect coolant for small volume top-offs or complete drains and refills.

Still not convinced? Prestone works for ALL vehicles with all fluid colors (OAT, POAT, HOAT, and IAT). So you really don’t have to worry whether it fits or not.

It only costs around $10 for a full gallon so it’s one of the cheapest RV antifreeze that made the list. There’s really no downsides to the Prestone antifreeze other than the container itself. It’s very tough to see through the container so you don’t really know how much you’ve filled in the tank nor how much there’s left in the container itself.

Pros

  • 10-year service guarantee
  • No need to add water
  • Works for all vehicles

Cons

  • Can’t look through container

6. Ford Gold Antifreeze

Source: Amazon

The Ford Gold Antifreeze is another great example of an RV antifreeze that’ll keep your camper safe all the way down to -35°F (-37°C) if you mix it 50/50 with coolant and distilled water. However, it comes undiluted so you can also mix it 70/30 if you want it to work all the way down to -84°F (-64°C).

One thing to note is it’s unclear which brands this coolant will work with. Although, if you drive a Ford, you should be more than fine. But I’d suggest you check if it fits your specific camper to be 100% on the safe side.

It’s by far not the cheapest antifreeze you can get for your RV but some people like to buy antifreeze that fits the brand of their camper. And for a good reason – then they’re 100% sure it’ll work just fine.

Pros

  • Contains a bittering agent
  • Works year-round
  • You decide the concentration

Cons

  • Quite expensive
  • Ford RVs only (double check)
  • You’ll have to mix it yourself

7. Engine Ice High Performance Coolant

Source: Amazon

What’s better than an antifreeze made for hi-performance powersports? With the Engine Ice coolant, you’re absolutely certain that your engine will remain chilly even in the most demanding moments.

You can pick it up in 1, 2, 3, 4, or 6-pack sizes over on Amazon. If you buy the 6-pack version, you’ll be paying $17.5 per 64 oz which is far from expensive.

What’s more, it’s biodegradable, phosphate free and non-toxic so if you’re low on Red Bull, you’ve always got a few oz available. Actually, I wouldn’t do that if I were you.

It comes prediluted so you won’t be able to decide the concentration of the coolant. However, with its 50/50 concentration, your RV will be safe all the way down to -35°F (-37°C) so you should be more than fine.

Pros

  • Fully biodegradable
  • Comes in 6 different sizes
  • Comes prediluted

Cons

  • Not the same as antifreeze

8. Mishimoto Liquid Chill

Source: Amazon

Unlike the Ford antifreeze, the Liquid Chill coolant works for practically all radiators and all gas/diesel engines so it’ll 100% work for your RV. No need to worry.

Another thing that’s super cool is it’s made in USA. You’re not buying some cheap antifreeze from China. This is the REAL deal!

If you’re driving a heavy-duty diesel vehicle, the service life can exceed 7+ years or 750.000 miles. That’s 30 times around the earth without changing the antifreeze. Not so worried about the $44 price now, aren’t you?

If I were to point out something bad about the Liquid Chill coolant, then it’d be the fact that the $44 price only applies to the diluted version. If you want the undiluted version, you’ll have to pay upwards of $65.

Pros

  • Made in USA
  • Works for all vehicles
  • 7+ year service life

Cons

  • Undiluted priced at $65

9. Shell Rotella ELC NF

Source: Amazon

The Shell antifreeze is like any antifreeze you can buy at your local Shell gas station. It gives you a ton of value for a respectable amount of money. You can buy the 6-pack on Amazon for a mere $153 which equals about $25 per gallon.

It’s nitrite free and gives you a service life of 600.000 miles or 6 years in medium to heavy duty vehicles such as your RV. But you can also use it for your passenger car and have a service life of 150.000 miles.

The recommended dilution rate for this antifreeze is 50/50. One gallon distilled water and one gallon ELC will give you 2 gallons of antifreeze.

Pros

  • Relatively cheap
  • Long service life
  • Comes undiluted

Cons

  • You’ll have to add water

10. Triax All Fleet ELC

Source: Amazon

The Triax All Fleet ELC is a lot like the Shell Rotella ELC in that it has an insanely long service life. In fact, Triax states that their service life is 1 million miles or 8 years.

It’s compatible with all diesel engines, semi-trucks, and tractors – so it’s without a doubt ideal to use in your diesel powered RV. Furthermore, it’s compatible with all types of color antifreeze.

And you don’t even have to use distilled water when mixing it. You can simply use tap water due to its huge additive concentration and inhibitors. Clever!

If I were to point out a single thing about the Triax RV antifreeze it’d be the relatively steep price point at $30 per gallon of undiluted antifreeze.

Pros

  • Long service life
  • Works for all diesel engines
  • Mix it with tap water

Cons

  • Relatively steep price point

Frequently asked questions

Let’s dive into some of the questions you might wonder about when purchasing RV antifreeze for your camper vehicle.

What is RV antifreeze?

RV antifreeze is a mixture of a colored liquid and water that regulates your engine’s temperatures. When temperatures outside drops or increases, the coolant will be pumped through the engine block to help maintain an ideal operating temperature in your RV.

It’s usually mixed with water at a 50/50 ratio and should be changed every other year (depending on the antifreeze). If you don’t, then the water that helps keep your engine cool will freeze, and you’ll end up overheating your engine which can cause serious damage to the radiator and other components in your RV’s engine.

You can also use it to winterize your camper by pushing antifreeze through the water lines in your camper. That way you’ll keep the water in your pipes from freezing.

If you want to know more about the chemical side of how antifreeze works, read this article: What Is Antifreeze by Jessica Clifton.

How to put antifreeze in RV?

The correct way of putting antifreeze in your RV is to use a water pump conversion kit to push antifreeze through all the faucets in your RV – and bypassing the fresh water tank. When opening each faucet, you should see a colored liquid coming out.

That way, you’ll drain the entire system and mixing it with RV antifreeze which will help you winterize your camper and keep water from freezing.

Here’s a more in-depth guide to winterizing your camper with antifreeze by MortonsOnTheMove.

How much RV antifreeze do I need?

If you want to drain your entire engine from coolant and refill it, you’ll need up to 3 gallons of antifreeze. It sounds like much but the average coolant costs you around $10 so you’ll be paying $30 for 2-5 years of use.

However, if you want to winterize your camper with antifreeze, then you’ll need to buy a lot more antifreeze to properly fill your water lines.

Where to buy RV antifreeze?

RV antifreeze can be bought at your local Walmart or on Amazon. I’ve listed what I think are the 10 best RV antifreeze above and included a link to either Amazon or Walmart for each of them.

If you chose to purchase through one of the links, I’ll make a small commission which helps keep this blog running. It won’t cost you a single penny though.

How to dispose RV antifreeze?

You shouldn’t dump your RV antifreeze on the ground even if it’s biodegradable. Some materials used in the antifreeze are flammable and some are chemical materials. The correct way to dispose your RV antifreeze is to pour it down the sewer or septic.

However, if you’re disposing ethylene glycol from your engine then you can either visit the local recycling center or find a nearby parts store that usually takes it back.

How long does RV antifreeze last?

The usual RV antifreeze will last between 2-5 years but it varies a lot. Take Prestone for example which lasts up to 10 years. I’ve included the shelf life and service life of each antifreeze in the article above.

Final thoughts

When looking for RV antifreeze for your camper, there’s a few things you want to consider:

  • How often do you need to change the antifreeze?
  • Will it work for your specific RV?
  • Does it come pre-diluted or do you need to add water?

Those are just some of the questions you want to ask yourself. One thing to note is that some antifreeze might not work for your specific RV. Make sure it fits! 🙂

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