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Author: Norah Tarichia / Last updated on March 3, 2021

The cold season can cause damage to your RV engine and piping system because the fluids can freeze, expand, and cause irreparable damage when they burst from the pipe. However, you can save both systems with the correct antifreeze. Although ordinary car antifreeze can effectively prevent the pipeline from freezing, it is toxic and may be harmful to the pipeline. This is why RV antifreeze is necessary. It is a non-toxic formula that helps prevent swelling and explosion of pipes due to freezing of water.

If this is your first winter treatment of your RV, you may not be sure which is the best antifreeze for your RV. There are many options to choose from, and we will help you find the option that provides the best protection for your RV water supply.

A 36-ounce bottle of this concentrate will make a gallon of antifreeze for your RV pipeline. It provides burst protection up to -50 degrees.

This 1-gallon bottle of ready-to-use antifreeze can be safely used on motorhomes and marine equipment. It provides burst protection up to -50 degrees.

Six 1-gallon bottles of ready-to-use antifreeze can provide up to -50 degrees cold weather and corrosion protection for your engine and piping system.

Our reviews are driven by hands-on testing by actual buyers, expert opinions, "popular wisdom" evaluations, and our own expertise. We always strive to provide true and accurate guides to help you find the best choice.

Also known as alcohol-based antifreeze, this type of antifreeze is the most affordable option. It helps prevent pipe bursts by increasing the freezing point of water. However, using alcohol in your water system has many disadvantages. On the one hand, it affects the taste of drinking water, and the smell is unbearable. In addition, it may require considerable effort to remove it from the system. The other thing is that alcohol will dry out the rubber seals, so you may have a leak and have to replace the seals at the end of the cold season. 

Propylene glycol is a synthetic type of alcohol, which also raises the freezing point of water. It is the best antifreeze for RV water systems because the compound is odorless, tasteless and non-toxic. In addition, it retains moisture well, so it helps to adjust and extend the service life of rubber seals.  

Combining the best ethanol and propylene-based antifreeze, this option is equally effective in increasing the freezing point of water and keeping the RV pipeline in good condition when the temperature is below -40 degrees. It is also non-toxic, but the alcohol content may still cause great damage to the seal. 

When Camco was founded in 1966, it only focused on designing antifreeze. Over the years, it has developed to develop more than 5,600 products, of which more than 140 have obtained patents. Some of these products include RV cleaning products, RV covers, RV toilet treatment solutions and RV water heaters. It is headquartered in Greensboro, North Carolina, but has other operations centers in Indiana, Albany, China, Vietnam and Thailand. 

Peak has more than 40 years of experience in designing products that can withstand harsh weather and operating conditions. Its parent company is Old World Industries, headquartered in Northbrook, Illinois. Peak specializes in designing motor oil, diesel fuel additives, car lights, windshield wiper blades and antifreeze. 

As a subsidiary brand of Ocean Bio-Chem Inc., Star Brite has been committed to designing high-quality automotive, marine and home care products since 1973. Its headquarters are located in Fort Lauderdale, Florida, but other operations centers are located in Europe and the United States. Some of its top products for RVs include RV cleaners and waxes, RV polishes, water treatment and freshener liquids, dehumidifiers, coolants and antifreeze. 

Splash is a car care product manufacturer based in Minnesota, which is part of Factory Motor Parts. It produces some of the best windshield washer fluids, pressure washer soaps, ice melting agents, vehicle cleaners, deicing fluids and antifreeze fluids. Its products are specifically designed for marine equipment, home care, passenger cars and recreational vehicles. 

Most RV antifreezes are rated at -50 degrees Fahrenheit and are also called burst protection. This is sufficient for most places with cold climates. But if possible, you can choose an antifreeze with a temperature rating of up to -100 degrees Fahrenheit to ensure that no matter how bad the weather is, your pipes will not freeze. 

You want to prioritize non-toxic solutions so you can use it in your drinking water system without worrying about getting hurt if your child or pet happens to consume antifreeze. For this reason, priority is given to environmentally friendly and FDA-approved antifreeze based on propylene glycol. Ethanol-based antifreeze is flammable and may be dangerous when placed around children. 

Consider whether you need a prepared solution (pre-dilution), or whether you need a concentrated solution so that you can prepare it yourself. The advantage of the pre-diluted solution is that it eliminates the risk of messing up the solution by preparing it yourself. However, concentrated solutions are generally more affordable than diluted formulations and have a longer shelf life. 

More about motorhomes and trailers

Use Camco RV Antifreeze Concentrate to protect your RV piping system from freezing and cracking. At a reasonable price, you can get two 36-ounce bottles, each of which can be made into a gallon of diluted antifreeze, enough to protect the entire piping setup of your RV. The concentrate comes in an easy-to-meter bottle, allowing you to dilute the mixture with water in the correct proportions. The red fluid provides burst protection up to -50 degrees and can also be used in swimming pools, boats or homes to prevent pipes from freezing. It is also a biodegradable and non-toxic formula, which is safe for pets. 

However, you should use the entire bottle immediately after opening and diluting it-the longer it stays in the bottle, the worse the effect will be.

Recommended for RVs, motorcycles, ATVs and speed boats, Splash RV and Marine Antifreeze help prevent the freezing of liquids in the engine and piping systems. Despite its low price, the formula is effective, reliable and safe for your water pipes. It provides burst protection up to -50 degrees without dilution. It is packaged in an ergonomic one-gallon bottle and the mixture is pink to help you easily detect any leaks in the system.  

Although it may be a non-toxic formula, you should still keep it out of the reach of children because the pink color and graphics on the bottle may attract them. In addition, if it is opened for a long time, the liquid may have black residue. 

Star Brite non-toxic antifreeze uses six 1-gallon bottles of antifreeze, which can provide convenient protection for the engine and piping system of your RV or marine equipment throughout the winter. It is a non-toxic formula based on propylene glycol and can be safely used for copper, brass and all types of plastics. It can also be used for drinking water settings. The formula is designed to provide burst protection up to -50 degrees and contains corrosion inhibitors to protect all metal engine parts. It also acts as a lubricant to protect the rubber seals and gaskets in the engine. In order to save the trouble of diluting the mixture, the liquid can be used directly from the bottle. 

Although it has an attractive pink color and the liquid has a strong smell, it is tolerable. In addition, for a small trailer, six packs may be a bit too much.

Use the Camco RV winter kit to make your RV smell fresh and the plumbing is in good condition. This is a 10-piece kit with three 32-ounce Premium Ban Frost Antifreeze Concentrate bottles, a mini dehumidifier, a refrigerator door support, a hand pump kit, a hanging dehumidifier, a refillable dehumidifier, A moisture absorber, a blowout stopper, and a 5-gallon bucket. Before using the hand pump kit to add antifreeze, you need to use a vent plug to clear the water pipe. You can also get a manual that contains step-by-step instructions on how to use each product in the kit. Antifreeze is a non-toxic propylene glycol concentrate that includes corrosion inhibitors and protective agents to prevent water pipes from freezing even in the harshest winter. 

However, if you only need antifreeze, then you may find this winter kit very expensive and some unnecessary purchases.

Peak RV and Marine Antifreeze is a non-toxic formula that can be used in all types of portable water supply systems. It can also be used in swimming pool filtration systems. It is designed to provide frost protection up to -50 degrees and also contains additives to prevent pipe scaling, rust or corrosion. The formula is regarded as GRAS (Generally Recognized As Safe) by the US Food and Drug Administration, so it can be used in drinking water systems. The 1-gallon bottle is ready to use, so you can use it to the fullest without worrying about corroding brass, copper or plastic pipes. 

Although it may be a safe formula, it has an unpleasant smell. However, after mixing with water in the piping system, odor may not be a problem.

Prepare your RV for the cold season with RecPro RV Antifreeze, which provides burst protection of up to -50 degrees for boats and RVs. It is a non-toxic formula based on propylene glycol and is made with FDA-approved ingredients, so it can be used safely in drinking water. It does not leave any unpleasant taste or smell in the water. The formula is also suitable for copper, brass, steel and plastic pipes. Most importantly, it lubricates the seals and gaskets so that they will not freeze and crack. In addition to RV use, you can also use it for swimming pool filtration systems or your home's plumbing and sewage systems. This ready-to-use purple liquid is packaged in a 1-gallon bottle. 

However, it can only be purchased in bulk-whether it is a two-pack or four-pack, which is a bit more for small motorhome owners. In addition, larger packages may come with some leaking bottles.

Camco Easy Going Antifreeze is a propylene glycol-based formula that provides antifreeze protection up to -50 degrees and can be safely used in ships and RV water systems. You will get six 1-gallon bottles of red antifreeze, which can be used directly from the bottle. The formula is non-toxic and tasteless, so it can be safely used in fresh water systems. It contains corrosion and dirt inhibitors to prevent rust and algae growth, respectively. Lubricant additives are also included to help adjust the seals and valves of the entire system. Its red color can help you detect leaks in the piping system, so you can fix them before they get worse. 

The main warning of this product is the color and packaging, which may attract children and make them think it is a fruity drink. 

RV antifreeze is a liquid solution that can be poured into the RV's tank, drain, or sewer system. It helps to increase the freezing point of water so that it will not freeze, expand and rupture the pipeline. 

Propylene glycol-based antifreeze is non-toxic to animals. Generally speaking, it is environmentally friendly and safe for your drinking water system.

Using RV antifreeze in a car can be a disaster, because unlike conventional antifreeze, it does not have anti-boiling agents added. The engine may overheat and eventually damage. 

After the cold season is over, you can dewinter your RV by running fresh water in the pipeline system. You can connect a water pump from a nearby fresh water tank, or you can use the city's water inlet. You can also see how to dispose of vehicle antifreeze here. 

Camco RV Antifreeze Concentrate is the best choice to keep the RV pipeline flowing steadily throughout the winter. It also does not affect the taste or smell of the water supply system. However, if you are looking for a budget price option that can still get the job done, we recommend Splash RV/Marine Antifreeze.

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