The Best Bulk Fluids - Brake Fluid, Steering Fluid, Battery Fillers, and Additives 2025

1. Marvel Mystery Oil - Oil Enhancer and Fuel Treatment, 32 oz.

Keep engines maintained and operating efficiently by adding Marvel Mystery Oil to the working system. It works to clean and lubricate fuel injectors and carburetors for smoother starting. Marvel Mystery Oil 32 oz is designed to extend the longevity of high-friction and heat-exposed parts by producing a delicate blend to existing oils or fuel systems to help reduce friction and wear on key components. It's suitable for use in a variety of vehicle makes and models and can improve the miles per gallon on any automobile. This automotive fuel additive also reduces and prevents varnish, gum and sludge build-up to keep moving parts clean and functioning at optimum capacity. This special formula also helps prevent against restrictive rust and corrosion. Marvel Mystery Oil supports peak performance and power output by providing vehicles with positive lubrication.

Marvel Mystery Oil, 32 oz Product Features: Positive lubrication for smoother starting and longer tool life Marvel mystery oil gallon dissolves gum and sludge that cut down tool speed and power output Prevents rust and corrosion Smoother riding and idling Helps extend life and peak performance Improves compression, power and MPG Lubricates upper cylinder Use in conventional, synthetic and 2 and 4 cycle oil Use in all gas types, including diesel and ethanol blends Available in a convenient 32 oz bottle Marvel Mystery Oil 32 oz is the original oil enhancer and fuel treatment Danger: harmful or fatal if swallowed, the product is also combustible

2. Marvel Mystery Oil - Oil Enhancer and Fuel Treatment, 1 Gallon

Unlike some products that just simply burn up and billow out your car’s tailpipe, Marvel Mystery Oil offers long lasting protection to your car’s hard working engine, by cleaning and adding a lubricating layer unparalleled by the other so called “Fuel & Motor Treatments”. Throw in some Marvel to your gas tank to restore engine performance.

Marvel Mystery Oil, 1 Gallon Product Features: Positive lubrication for smoother starting and longer tool life Marvel mystery oil gallon dissolves gum and sludge that cut down tool speed and power output Prevents rust and corrosion Smoother riding and idling Helps extend life and peak performance Improves compression, power and MPG Lubricates upper cylinder 8 lbs Use in conventional, synthetic and 2 and 4 cycle oil Use in all gas types, including diesel and ethanol blends Available in a convenient 1-gallon jug Marvel Mystery Oil 1 gallon is the original oil enhancer and fuel treatment Danger: harmful or fatal if swallowed, the product is also combustible

3. FPPF 90161 HOT 4-in-1 Fuel Oil - Heating Oil Treatment 16oz Bottle Treats 275 Gallons

FPPF 90161 HOT 4-in-1 Heating Oil Treatment Description: 16 Oz Bottle Item Number: 00161, 90161Treats: 275 Gallons Totally disperses water and controls waxing and gelling There is always water in fuel oil, but some people downplay the existence of water and the problems it can create. Oil pumped from a cold delivery truck's tank into a warm basement tank causes condensation. Also, water can enter a tank when it is being filled during a rain or snow storm. When water interfaces with fuel oil, algae is produced in the form of sludge. Water pulls the gum from the fuel oil which builds up on the burner parts as varnish. Filters are meant to get rid of dirt. That leaves the water for you to contend with. HOT 4 in 1 is the best at: Dispersing water. HOT 4 in 1 disperses any normal accumulation of water in a tank, turning it into a combustible solution. Getting rid of sludge. HOT 4 in 1's specially formulated chemical base dissolves the sludge into a combustible substance in such a way as not to clog nozzles while assuring clean filters and strainers. Improving atomization and reducing soot. HOT 4 in 1 eliminates sludge so the fuel oil reaching the nozzles is clean. This will mean improved atomization takes place and soot is reduced substantially. Ultimately resulting in more complete combustion, less smoke and better fuel economy. Preventing waxing and gelling. HOT 4 in 1 will disperse the water that causes fuel line and fuel filter icing.

A case of (24) 16 oz. bottles Winter special offer FPPF 90161 HOT 4-in-1 Fuel Oil - Heating Oil Treatment 16oz Bottle Treats 275 Gallons A case of (24) 16 oz. bottles Winter special offer HOT 4 in 1 will lower the cold filter plug point (CFPP) and the pour point of fuel and will prevent waxing and gelling. The reason is paraffin wax, always present in fuel oil, develops crystals when the fuel oil reaches it's ""cloud point"" temperature. When these crystals are totally formed at the ""pour point"" temperature, the fuel oil ceases to flow. Also during the coldest days of winter, fuel oil in outdoor tanks can cease to flow.

4. (12 pack) SEA FOAM MOTOR TUNEUP 24/CASE

SEA FOAM MOTOR TUNEUP 24/CASE

SEA FOAM MOTOR TUNEUP 24/CASE

5. B3C Fuel Solutions 1-004-12 Ethanol Shield 4 oz. - Case of 12

Ethanol Shield Fuel Stabilizer eliminates and prevents ethanol related problems in all equipment with 2-cycle and 4-cycle engines. It prevents corrosion, removes water, keeps stored fuel fresh and provides easy engine starting all year. Our new Military Specifications (Mil-Spec) formula which provides level of protection never before available to the general public. It includes an All Metal Anticorrosive Package (Top Level ASTM & NACE Ratings) and an Antioxidant Package - Up to 25X more anti-oxidants compared to leading competitors.Features Year round protection Stabilize gas up to 3 years Protects, preserves & lubricates the top end of all engines Item Weight - 4 oz. Case Pack of 12 Dimension - 6.75 x 6 x 8.125 in. Case Pack weight - 3.75 lbs. - SKU: BCFL001

4 OZ, Ethanol Shield, For 2 Cycle Engine Use, Protects Your Entire Fuel System From The Harmful Effects Of Ethanol Blended Fuel & Cleans Varnish & Carbon Deposits From The Fuel Tank To The Tailpipe, Treats The Problem Not The Symptom, Preventative Maintenance Formula, Removes Water, Prevents Ethanol Phase Separation, Contains Rubber & Plastic Conditioners, Increases Octane, Fuel Stabilization, Upper Cylinder Lubrication, Reduces Emissions, Synthetic Fuel Additive, Safe For 2 Cycle Engine.

6. (12 pack) Torco Octane Boost 32.00 oz P/N F500010TE

Torco Accelerator is not just another fuel additive, It's simply a RACE FUEL CONCENTRATE! With many of the same additives our winning race fuel possesses, TorcO Accelerator is a blend of components which will transform the make up of premium pump gas to closely resemble race fuel..

A blend of components which transforms the make up of premium pump gas to closely resemble race fuel Will not harm sensitive O2 sensors or catalytic converters Great for motorcycle, ATV, snowmobile, watercraft and automotive use

7. Lucas Oil Upper Cylinder Lube 1 qt Case of 12 P/N 10003-12

Lucas Oil Upper Cylinder Lube 1 qt Case of 12 P/N 10003-12. Fuel Additive. Upper Cylinder Lube. 1 qt. Gas/Diesel. Set of 12.

Fuel Additive Upper Cylinder Lube 1 qt Gas/Diesel Set of 12

8. PowerPlus Hot Oil Additive Kart Racing/Midget Racing - Horsepower Booster - 4oz (12 PACK)

This is a 12 pack of 4oz bottle of Power Plus Hot Oil Additive. Part number 19769-58 Power Plus Hot Oil Additive is a combustion enhancer and horsepower booster that has been specially formulated to blend with all oils. Hot Oil Additive slips past the rings making its way into the combustion chamber and delivering the effects of a fuel additive while being introduced through the oil. often used in Kart and Quarter midget racing where regular fuel tests are performed. When looking for “The Unfair Advantage” racers choose Power Plus Hot Oil Additive. FEATURES BLENDS WITH ALL SYNTHETIC AND PETROLEUM OILS SLIPS PAST RINGS FOR INCREASED COMBUSTION INCREASES HORSEPOWER AND TORQUE PASSES BURN TEST USAGE Recommended for use in all racing engines where fuel tests are being performed and increased power is desired. One 4 ounce bottle treats 28-32 ounces of oil. For increased performance where fuel tests are not being performed use Hot Oil Additive directly in your fuel at a ratio of one ounce per gallon of gas, alcohol, or ethanol fuel. Commonly used in kart, quarter midget, trophy kart and Jr. Drag racing. When using Hot Oil Additive mixed in with your oil frequently check and top off oil level as Hot Oil Additive will burn in the combustion chamber leaving your oil level slightly lower after each session. Shipping will be free to the US only. Item will be shipped within one business day upon receiving payment for your purchase, and if in time, will be shipped the same business day. We process and ship orders daily though the five business days, sometimes within minutes of your order and usually within 24 hours of your order. We also respond to inquiries within a 24-hour period. Heintz Sales, founded in 2016, is a locally owned small business e-commerce venture, looking to meet your online purchasing needs in automotive, sport and recreation, and general DIY home improvement projects. We carry a variety of products from more than 200 manufacturers, and have been expanding our product offerings daily. Heintz Sales works in close partnership with Heintz Brothers Automotive, striving to meet the racing needs of oval track racers, drag racers, dirt track racers, NASCAR racers, and racers of any kind. Heintz Brothers for over 50 years has specialized in engine building, parts sales, and customer service in the racing industry. Our commitment to excellence and the business is shown by the induction of the Heintz Brothers, Steve and Mike, into the NC Drag Racing Hall of Fame. Heintz Brothers is located in Statesville, NC, and also works in partnership with Heintz Performance, located in Concord, NC, near the speedway. We appreciate the opportunity to meet your performance racing needs and thank you for your support of our small business. We hope to have the opportunity to serve you in the future. Feel free to contact us with any questions. Thank you!

PowerPlus Hot Oil Additive Kart Racing/Midget Racing - Horsepower Booster - 4oz (12 PACK)

9. 60123 15 oz SI-1 Injector & Valve Detergent, Case of 12

15 oz SI-1 Injector & Valve Detergent Motor State Distributing has set the pace for high-performance automotive components for racing, street, and off-road use. We offer wide range of quality auto accessories. Features Manufactured utilizing the highest quality materials Built to provide exceptional levels of durability Case of 12Specifications Capacity: 15 oz - SKU: ZX9MTRST129966

60123 15 oz SI-1 Injector & Valve Detergent, Case of 12 60123 15 oz SI-1 Injector & Valve Detergent, Case of 12 60123 15 oz SI-1 Injector & Valve Detergent, Case of 12

10. Miles Lubricants Biosyn FR-46 Fire Resistant PAO-Based Brake Fluid, 4 x 1 Gallon, Case

The Miles Biosyn FR-46 is a premium-quality, PAO-based hydraulic fluid designed to offer superior fire resistance and enhanced lubrication and protection. With its high flash point, exceptional oxidative stability, and non-toxic formulation, this 4-gallon case of the Biosyn FR-46 provides long-lasting performance and superior pump protection, ensuring reliable operation in demanding hydraulic systems. Its optimal viscosity and anti-wear properties make it an ideal choice for applications where fire resistance is a critical requirement.

The Miles Biosyn FR 46 is a fire-resistant, PAO-based hydraulic fluid formulated to offer superior fire resistance and enhanced lubrication and protection. This hydraulic fluid has a very high flash point of 479°F and an auto ignition point of 755°F, making it well-suited for applications where fire resistance is a critical requirement. The product provides superior pump protection and offers excellent protection against wear, rust, and corrosion, ensuring long-lasting performance and reliability. With its exceptional demulsibility, oxidative stability, and high viscosity index, this hydraulic fluid is easy to maintain and has an exceptionally long fluid life. The non-toxic and non-hazardous formulation of the Miles Biosyn FR 46 makes it a safe choice for a variety of applications. The fluid's lubrication properties, including a viscosity index of 123, viscosity of 49.8 cSt at 40°C, and 7.8 cSt at 100°C, ensure optimal performance and protection for your equipment.