
40804 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $32.12 | Condition is New, POR-15 40804 Reducer Solvent - 1 Qt, FREE SHIPPING | ![]() |
![]() | $34.16 | Condition is New, New POR-15 Reducer Medium Speed Solvent Quart 40804, Free Shipping, FREE SHIPPING | 99.7% |
![]() | $35.36 | Condition is New, New POR-15 Reducer Medium Speed Solvent Quart 40804, Free Shipping St. USA, FREE SHIPPING | 99.5% |
![]() | $22.64 | Condition is New, POR 15 REDUCER SOLVENT - QT.- 40804, shipping cost = $14.99 | ![]() |
![]() | $62.11 | Condition is New, New POR-15 Reducer Medium Speed Solvent Quart 40804 (2 Pack), FREE SHIPPING | 99.7% |
![]() | $89.54 | Condition is New, New POR-15 Reducer Medium Speed Solvent Quart 40804 (3 Pack), FREE SHIPPING | 99.7% |
![]() | $175.99 | Condition is New, New POR-15 Reducer Medium Speed Solvent Quart 40804 (6 Pack), FREE SHIPPING | 99.7% |

The Por-15 40804 Reducer Solvent is a versatile and effective solution for restoring and sealing automotive surfaces. This high-performance product is specifically designed to be used with Por-15's rust converter coatings, such as the Por-15 Rust Preventive Coating and Por-15 Rust Encapsulator.
The 40804 Reducer Solvent is a thin, low-viscosity liquid that allows the Por-15 rust converter coatings to penetrate deeply into rusted metal surfaces, converting the rust into a stable, black flake. This process not only seals the rust but also creates a stable foundation for the topcoat, ensuring a long-lasting repair.
This reducer solvent is ideal for use on vertical surfaces, crevices, and hard-to-reach areas where the Por-15 coatings may be difficult to spread evenly. It can be applied with a brush, roller, or spray gun and dries quickly, typically in 2-4 hours, depending on environmental conditions.
The Por-15 40804 Reducer Solvent is VOC-compliant and has a low odor, making it a safer and more pleasant option compared to traditional solvents. It is also resistant to gasoline, diesel, oil, and other automotive fluids, making it an excellent choice for use on fuel tanks, gas lines, and other under-the-hood applications.
When using the Por-15 40804 Reducer Solvent, it is important to follow the manufacturer's instructions carefully to ensure optimal results. This includes thoroughly cleaning the surface before application, applying the Por-15 coatings evenly, and allowing the reducer solvent to dry completely before applying the topcoat. With proper application and maintenance, the Por-15 40804 Reducer Solvent can help restore and protect automotive surfaces from rust and corrosion for years to come.
Por-15 40804 Reducer is a rust converter and penetrating oil used to prepare surfaces for painting or coating, especially on automotive parts. Here are the pros and cons of using Por-15 40804 Reducer:
Pros:1. Effective Rust Conversion: Por-15 40804 Reducer converts rust into a stable, adherent surface, making it an excellent choice for restoring rusted metal parts.
2. Penetrates Deep: The solvent can penetrate deep into the rusted surfaces, ensuring thorough coverage and protection.
3. Easy Application: Por-15 40804 Reducer is easy to apply using a brush, roller, or spray gun, making it a versatile option for users with varying application preferences.
4. Fast Drying Time: The reducer has a relatively short drying time, which allows for quicker completion of projects and reduces the overall time spent on restoration work.
5. Excellent Adhesion: The converted surface created by Por-15 40804 Reducer provides excellent adhesion to primers and topcoats, ensuring long-lasting results.
Cons:1. Strong Odor: Por-15 40804 Reducer has a strong, unpleasant odor, which may be a concern for some users, particularly those working in poorly ventilated areas.
2. Hazardous: The product contains solvents and other chemicals that can be hazardous to health and the environment, so proper safety precautions must be taken during application and disposal.
3. Limited Coverage: One gallon of Por-15 40804 Reducer covers approximately 250 square feet, which may not be sufficient for larger restoration projects.
4. Higher Cost: Compared to other rust converters and penetrating oils, Por-15 40804 Reducer is relatively more expensive, which may be a deterrent for some users.
Conclusion:Por-15 40804 Reducer is a highly effective rust converter and penetrating oil that offers several advantages, including its ability to convert rusted surfaces, penetrate deeply, and provide excellent adhesion. However, it comes with some disadvantages, such as its strong odor, hazardous nature, limited coverage, and higher cost.
Recommendation:If you're looking to restore rusted metal parts, Por-15 40804 Reducer is an excellent choice due to its effectiveness and ease of application. However, be prepared for the strong odor, hazardous nature, and higher cost. Ensure proper safety precautions are taken during application and disposal, and consider the size of your restoration project to determine if the coverage provided by one gallon will be sufficient. If you're on a budget or prefer a less hazardous option, there are other rust converters and penetrating oils available in the market that may suit your needs.
Details:
Part #: 40804.
specifications specipaint:
- for years: 2015
- brand: Por-15
- mpn: 40804
- part type: Reducer
- warranty: 90 Day
payments specipaint:
- credit card: discover
- other
- wallet: paypal
offer specipaint:
- sold #: 19
- started: february 15, 2025
- prices: $22.64–$175.99
- item condition: New
- availability: in stock
- options: ship-to-home
- in stock #: 5
shipping specipaint:
- class: standard
- transit: 5-10 days
- type: fixed
- service: standard
seller specipaint:
- # reviews: 12296
- rating: 98.7%
- city: springfield, massachusetts
general specipaint:
- category: Auto Parts > Paints Supplies > Specialty Coatings > Rust Prevention
returns specipaint:
- policy: returns accepted
- paid by: buyer
- time: 30 days







