Wool Wax vs. Fluid Film – What Are The Major Differences?

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Main Difference Wool Wax vs. Fluid Film: there are a lot of different similarities between the two products. They are both used to prevent rusting and corrosion. However, the differences are to see as well. The Fluid film smells worse but not in all cases. The wool wax has a stronger smell that lingers longer. 

Moreover, Wool Wax is cheaper in terms of spray cans. However, it is also harder to apply than the Fluid Film. The Fluid Film has larger durability in terms of comparison and it is easier to find as it is more popular and widely used.

ComparisonWool Wax Fluid Film 
Definition Wool wax is a Lanolin-made undercoated formula used in cars, locks, and so on. Fluid Film is an antitoxic and anti-corrosion rust preventing coater for most metallic products including vehicles.
Brand It is made by a lot of manufacturers, including WoolWaxUSA. FLUID FILM is the most popular brand for Fluid Film products. 
Needed psi Can be sprayed at anywhere from 70 to 90 psi.An overall pressure of 60 to 70 psi is enough.
Size The spray can, comes with a 12 oz rating.The spray cans come at 11.75 oz of substance per can.
Durability It lasts about a year in open sides but can last longer in closings and cracks. These last about 32 months before a change. 

What Is Wool Wax?

Wool wax is a rust-prevention product and formula that you can use to prevent rusting. It is generally made out of raw Lanolin, which makes it more crude and strong. It can be underused in cars, locks, or any iron surface. Overall, it will provide great protection.

In characteristics, it has a strong smell but it washes off quickly and conveniently. In brief, the spray cans have about 12 ounces of Wool wax in them and come at a price of 9.95 US Dollars. If a spray gun is used for more magnitude, a pressure of 70 to 90 psi is enough. Overall, it is harder to apply than the Fluid Film and will technically last for a shorter time. However, it will still provide a great service. For it being tougher and thicker, it is better in colder weather. 

What Is Fluid Film?

Fluid Film is a non-toxic, eco-friendly lubricant and coating substance. It is also a great penetrator and anti-corrosive coating. It is also made of Lanolin and prevents rust very well. On average, it can cost 150 to 200 US dollars to coat the whole underside of your vehicle, depending on the size. If sprayed in greater volume, it will need a pressure of 60 to 80 psi. When used correctly, it can give service up to 32 or 36 months of protection. A can of Fluid Film has 11.75 ounces of protective liquid and it comes at about 10.6 US dollars per can.

Wool Wax Vs Fluid Film: Major Differences

Weather performance

In the case of weather performance, the Fluid film and wool wax both perform well under hot or medium weather. In terms of application, the Fluid film is great and easier to apply. In colder weather, the Wool Wax might last longer and give better service because of its higher thickness and strength. 


When needed at a large amount, small 12 or 10-ounce cans tend to run out and it starts getting frustrating.  So, you can always get it done by using a spray gun. For that, the Fluid film will need 60 to 80 PSI of pressure, making it easier than the Wool Wax. On the other hand, the Wool Wax will need a PSI rating of 70 to 90 PSI. The reason behind this can be the crude nature and thickness of the Wool Wax overall. 


When it comes to undercoating your vehicle, the smell might be a huge factor. As the coatings are made from crude raw materials such as Lanolin, they tend to have a stronger smell. Also, the cruder the liquid the strong smell. In this case, the Fluid film has a worse smell than the Wool Wax. Though, it does not last as long as Wool Wax, which has a stronger smell. 


In terms of compatibility, the Fluid Film and Wool Wax both can be used on iron surfaces. This can be on vehicles, small locks, bugger locks, doors, and so on. Overall, these products give great service in terms of protecting them from rust. 

Size and price 

In the short term, the Wool Wax cans come in at 12 ounces of substance at the price of 9 US dollars. The Fluid Film however comes at 11.75 or 11.50 ounces of substance and at 10 to 11 US dollars of price. However, the cans are definitely not enough for vehicles. They are rather for smaller appliances and usage. 

Wool wax: Better for Price and Colder Weather

In comparison with the Fluid Film, the Wool Wax is better in terms of price and usage in colder weather. In the can forms, the Wool Wax has slightly more substance and a lower price, which makes it convenient to choose. Also, because of its thicker nature, it is better in performance when it comes to drier, colder weather. So if you are living in mountainous areas, the Wool Wax might just be the better choice for you. 

Fluid Film: Better for easier appliance and availability 

As mentioned Fluid Film is more popular than Wool Wax, which makes it easier to find. Also, it has much longer durability and can be applied more easily. Also, it has an overall affordable price considering the features and convenience that it offers. So, if you are looking for a better product overall, the Fluid film will definitely be a better choice for you.

Pros and Cons of Wool Wax 


  • It has raw materials of Lanolin which provides a stronger and durable service. 
  • It washes off quickly in comparison with the Fluid Film. 
  • It is comparatively cheaper. 


  • For its thicker nature, it is harder to apply and needs more pressure. 
  • It has a long-lasting and strong smell. 

Pros and Cons of Fluid Film 


  • It is more durable than the Wool Wax. 
  • Popularity and availability are more in comparison.
  • It has a less lingering smell, which means it goes away quicker. 
  • Easier to apply on surfaces. 


  • More pungent smell. 
  • Slightly pricier.

Final words 

Overall, both the products are great. Wool wax is a harder and definitely stronger product. However, the Fluid Film is a more suggestible choice. Of course, it always depends on the environment and what you want out of the product. So weigh in on your choices before making a decision.

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