A strong parts washer fluid removes oil, grease, grime, and other soils while matching your washer system, part materials, and preferred handling requirements. Water-based formulas suit buyers seeking low odor, non-flammable, or pH-neutral cleaning, while solvent formulas emphasize fast degreasing and residue-free results. Capacity also matters: this selection includes one-gallon jugs and five-gallon pails, plus a concentrated cleaner intended for dilution.
Some products add corrosion inhibition, which can matter when cleaned steel or cast iron parts will sit before reassembly. Before choosing, check whether your equipment calls for an aqueous solution, cold solvent, recirculating solvent, spray-washer chemistry, or a microbial smart-washer-compatible fluid.
The best fit is the formula that supports your cleaning method without creating a material or maintenance mismatch.
The best parts washer fluid depends on the equipment and parts. Oil Eater and CRC SmartWasher OzzyJuice offer water-based, pH-neutral options, while B’laster, Zep, and CRC provide solvent formulas for heavy grease and oil removal. Choose a product with corrosion inhibitors for steel or cast iron storage, such as Master STAGES CLEAN2029 or Von Haas.
For material flexibility, several options specify use on metals, most plastics, or painted surfaces. Confirm capacity and system compatibility before filling a washer.
Parts Washer Fluids: A Comparative Overview
How We Compared These Products
We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from Oil Eater, Blaster, CRC, Simple Green, Zep, Von Haas, and Master STAGES.
The shortlist includes products such as Oil Eater Parts Washer Fluid, Blaster B’laster Parts Washer – Parts Cleaner Solvent – High Flashpoint Formula Cleans Oil, and CRC SmartWasher OzzyJuice SW-4 Water-Based Parts Washer Fluid. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.
Detailed Reviews: Best Parts Washer Fluid
1. Oil Eater Parts Washer Fluid, Water-Based Heavy Duty pH Neutral, Smart Microbe Safe Parts Cleaner Systems, 5 Gallons
Best for: Microbial parts washer systems.
This water-based, pH-neutral parts washer fluid features 3X more active ingredients than leading brands, enabling powerful cleaning for tough grease and grime. Its non-toxic, unscented formula is safe for microbial smart washers and most parts washer systems.
Designed for heavy-duty cleaning, this liquid formula effectively removes oil, grease, grime, and dirt from parts, tools, and engines. It is safe for use on nearly any surface and is streak-free. The pH-neutral composition ensures it is non-abrasive, making it suitable for various cleaning tasks without damaging components.
Product Details
| Brand | Oil Eater |
|---|---|
| Item Form | Liquid |
| Manufacturer | Oil Eater |
| Material Feature | Non-Toxic, Unscented |
| Material Features | Non-Toxic, Unscented |
| Free From | Bleach Free, Dye Free |
| Model Number | AOD5G28801 |
Additional Product Information
| Size | 640 Fl Oz (Pack of 1) |
|---|---|
| Special Features | All Purpose, Low Odor, Non Abrasive, PH Neutral, Streak Free |
Pros
- 3X more active ingredients than leading brands
- pH neutral and non-abrasive
- Safe for microbial smart washers
- Low odor and non-toxic formulation
Cons
- Requires use in a parts washer system
Ideal for users with microbial smart parts washer systems seeking a powerful, pH-neutral, and low-odor cleaning solution for heavy-duty degreasing tasks.
2. B’laster Parts Washer – Parts Cleaner Solvent – High Flashpoint Formula Cleans Oil, Grease & Grime, No Residue, Works on Metals, Most Plastics & Painted Surfaces – 5‐Gallon
Best for: Metal, plastic, and painted surfaces.
This high-flashpoint parts cleaner solvent quickly breaks down tough oil, grease, and grime, performing better than ordinary mineral spirit cleaners. It is designed to help with maintenance and rebuilds by efficiently removing buildup on parts.
The reliable cleaning formula works on metals, most plastics, and painted surfaces, leaving no residue. Its concentrated liquid form is ideal for preparing parts before painting or reassembly, making maintenance and rebuilds easier. The 5-gallon volume provides ample fluid for extensive cleaning operations.
Product Details
| Brand | Blaster |
|---|---|
| Item Form | Liquid |
| Item Volume | 5 gallons |
| Manufacturer | B'laster |
| Material Features | Cruelty Free |
| Model Number | 5-PWS |
| Size | 5 Gallon |
Additional Product Information
| Special Features | Concentrated |
|---|---|
| Additional Information | Important information |
Pros
- High flashpoint formula
- Cleans oil, grease, and grime effectively
- Works on metals, plastics, and painted surfaces
- Leaves no residue
Cons
- Item volume is 5 gallons, which may be excessive for small tasks
Suitable for mechanics and DIYers who need a versatile, residue-free solvent for cleaning various components, especially before painting or reassembly.
3. CRC SmartWasher OzzyJuice SW-4 Water-Based Parts Washer Fluid – 5 Gallon
Best for: Industrial-grade degreasing.
This heavy-duty, aqueous-based degreasing solution is a safer choice compared to traditional solvents, being non-hazardous and non-flammable. Its pH-neutral formula contains emulsifiers and surfactants for superior parts cleaning without harsh chemicals.
The industrial-grade fluid is designed for the most difficult cleaning processes, effectively removing motor oil, automotive grease, and hydraulic fluids. It is low odor and contains no VOCs, making it suitable for use with specific parts washer models. The biodegradable material feature supports environmentally conscious cleaning.
Product Details
| Brand | CRC |
|---|---|
| Container Type | Jug |
| Included Components | Unit^Instruction Guide |
| Item Form | Liquid |
| Item Volume | 5 gallons |
| Item Weight | 44 pounds |
| Manufacturer | Crc |
Additional Product Information
| Material Features | Biodegradable |
|---|---|
| Model Number | 14148 |
| Size | 640 Fl Oz (Pack of 1) |
| Special Features | Low Odor,Ph Neutral |
| Additional Information | Important information |
Pros
- Non-hazardous and non-flammable
- Aqueous-based, solvent-free formula
- Low odor and no VOCs
- Biodegradable material
Cons
- Requires use in a parts washer system
An excellent option for industrial settings requiring a powerful, safer degreaser for heavy-duty cleaning tasks, especially when VOCs and flammability are concerns.
4. B’laster 128-PWS Industrial Strength Parts Washer Solvent
Best for: Residue-free cleaning.
This industrial-strength parts washer solvent is formulated to outperform mineral spirit-based solvents, quickly removing cutting oil, motor oils, and grease. It is designed to leave parts completely residue-free after cleaning.
The high-flashpoint formula, at 145-degrees F, is safe for use on all metals, most plastics, and painted surfaces. Its liquid form is ideal for re-circulating parts washers, ensuring efficient removal of contaminants without leaving any residue, which is perfect for precision cleaning needs.
Product Details
| Brand | Blaster |
|---|---|
| Included Components | Unit^Instruction Guide |
| Item Form | Liquid |
| Item Volume | 1 gallons |
| Item Weight | 7 pounds |
| Manufacturer | B'laster |
| Material Feature | Residue Free |
Additional Product Information
| Material Features | Residue Free |
|---|---|
| Model Number | 128-PWS |
| Size | 128 Fl Oz (Pack of 1) |
| Special Features | Residue Free |
| Warranty Description | 1 year manufacturer |
Pros
- Cuts through cutting oil, motor oils, and grease
- Leaves parts residue-free
- High flashpoint formula (145°F)
- Safe for all metals, most plastics, and painted surfaces
Cons
- Comes in a 1-gallon size, potentially requiring multiple purchases for larger jobs
Best for users who prioritize a residue-free finish on cleaned parts, particularly when working with metals, plastics, and painted surfaces in a parts washer.
5. Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle
Best for: Concentrated multi-purpose cleaning.
This professional-grade, concentrated cleaner is developed for multi-purpose contractor applications, quickly eliminating tough grease and grime. It is a PROP 65 product that is non-corrosive and safe on metal surfaces.
The heavy-duty formula is suitable for various uses including parts washing, ultrasonic cleaning, and pressure washing. Its biodegradable nature and concentrated liquid form mean a little goes a long way, making it an economical choice for degreasing industrial equipment, automotive parts, and commercial kitchens.
Product Details
| Brand | Simple Green |
|---|---|
| Compatible Refills | simple_green_pro_hd_heavy_duty_cleaner |
| Included Components | Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle |
| Item Form | Liquid |
| Item Volume | 1 gallons |
| Item Weight | 8 pounds |
| Manufacturer | Simple Green Industrial – Geneva |
Additional Product Information
| Material Feature | Biodegradable |
|---|---|
| Material Features | Biodegradable |
| Model Number | 2110000413421 |
| Size | 128 Fl Oz (Pack of 1) |
| Special Features | Concentrated |
Pros
- Concentrated formula for multi-purpose use
- Quickly eliminates tough grease and grime
- Non-corrosive and safe on metal
- Biodegradable material
Cons
- Requires dilution before use
Ideal for contractors and professionals needing a versatile, concentrated cleaner for a wide range of degreasing tasks, from parts washing to industrial equipment maintenance.
6. R19835 PARTS WASHER SOLVENT 5 GAL/PAIL
Best for: Cold solvent cleaning.
This industrial-grade parts washer solvent is formulated for effective soil removal, tackling tough buildup, oil, and grease from metal surfaces without requiring heating. Its citrus fortification adds cleaning power and a pleasant fragrance.
Designed for cold solvent cleaning tanks, this concentrated liquid is ready to use in solvent-based parts washer systems or can be applied by spraying or wiping. It ensures optimal performance of machinery and equipment by handling demanding cleaning tasks with ease, leaving surfaces clean.
Product Details
| Brand | Zep |
|---|---|
| Item Form | Liquid |
| Item Volume | 5 gallons |
| Item Weight | 36.4 pounds |
| Manufacturer | Amrep |
| Model Number | 1041596 |
| Size | 640 Fl Oz (Pack of 1) |
Additional Product Information
| Special Features | Concentrated |
|---|
Pros
- Effective soil removal
- Formulated for cold solvent use
- Industrial-grade degreaser
- Citrus fortification for added cleaning power
Cons
- Has a scent, which may not be suitable for all environments
A great choice for industrial and commercial applications that require effective degreasing in cold solvent cleaning tanks, especially when a pleasant fragrance is desired.
7. Zep Dyna 143 Parts Washer Solvent – 5 Gallon (1 Bucket) 36635 – Designed for use in Part Washes
Best for: Low evaporation parts washing.
This highly-refined, odorless parts washer solvent quickly dissolves and flushes away grease, oil, and other soil. Its low evaporation rate and vapor pressure minimize evaporative loss and employee exposure, ensuring a safer working environment.
With a higher flash point of 143°F compared to mineral spirits, this solvent reduces flammability hazards in shop areas. It is designed for use in Zep parts washers, where it can be continuously recycled. The liquid is safe to use on all metal parts and can be applied with a brush or as a dip.
Product Details
| Brand | Zep |
|---|---|
| Item Form | Liquid |
| Item Weight | 35.3 pounds |
| Manufacturer | Zep |
| Material Features | Recycled |
| Size | 128 Fl Oz (Pack of 5) |
| Additional Information | Important information |
Pros
- Highly-refined and odorless solvents
- Low evaporation rate and vapor pressure
- Higher flash point (143°F) reduces flammability
- Safe for use on all metal parts
Cons
- Designed for use with specific Zep parts washer systems
Recommended for users with Zep parts washer systems seeking an odorless, low-evaporation solvent that effectively cleans metal parts while minimizing safety hazards.
8. Parts Washer Solvent, 5-Gallon, Model# VHPW5
Best for: Aqueous substitute for solvents.
This aqueous parts washer solvent serves as a safe and effective substitute for solvent-based cleaners, being non-carcinogenic, non-toxic, and non-flammable. It is designed to clean parts without hazardous fumes or cleanup.
The water-based solution includes rust inhibitors to prevent corrosion on metal and steel parts during the cleaning process. Its non-butyl and non-hazardous formulation makes it a safer choice for cleaning various components in a parts washer, ensuring protection against rust.
Product Details
| Brand | Von Haas |
|---|---|
| Item Weight | 43.2 pounds |
| Item model number | VHPW5 |
| Manufacturer | Von Haas |
| Package Dimensions | 23 x 13 x 13 inches |
Pros
- Aqueous substitute for solvent-based cleaners
- Non-carcinogenic, non-toxic, and non-flammable
- Contains rust inhibitors
- Non-hazardous to clean up
Cons
- Water-based formulation may have different drying times than solvents
An excellent choice for users seeking a safer, water-based alternative to traditional solvents, particularly when rust inhibition on metal parts is a requirement.
9. CLEAN2029/1G Clean 2029 Parts Washing Fluid with Corrosion Inhibitor, Yellow, 1 gal Jug
Best for: Ultrafiltration and bioremediation compatible.
This highly concentrated cleaner/corrosion inhibitor is formulated without silicates or high pH additives, making it compatible with ultrafiltration systems and bioremediation. It offers fast cleaning even at low temperatures and provides long bath life.
Designed for spray washers and immersion tanks, this fluid removes heavy soils and provides two-to-four weeks of indoor corrosion inhibition on steel and cast iron parts. It is hard water tolerant and simplifies environmental approvals as it contains no nitrites, barium, phenols, or butyl cellosolve.
Product Details
| Brand | Master STAGES |
|---|---|
| Compatible Material | Steel, Stainless, Cast Iron, Titanium, Aluminum Alloys |
| Container Type | Jug |
| Item Form | Liquid |
| Manufacturer | Master Chemical Corporation |
| Material | Silicates |
| Model Number | CLEAN2029/1G |
Additional Product Information
| Recommended Uses | Industrial |
|---|---|
| Additional Information | Important information Ingredients TRADE SECRET, TRIETHANOLAMINE, Other components below reportable levels |
Pros
- Compatible with ultrafiltration systems and bioremediation
- Fast cleaning at low temperatures
- Provides 2-4 weeks of corrosion inhibition
- Hard water tolerant
Cons
- Comes in a 1-gallon jug, suitable for smaller operations
Ideal for facilities using ultrafiltration or bioremediation systems, or those needing effective cleaning with built-in corrosion protection for steel and cast iron parts.
10. CRC Parts Washer Solvent – Zero VOC, Industrial-Grade Cleaner – 5 Gallon
Best for: Zero VOC industrial cleaning.
This industrial-grade parts washer solvent is a Zero VOC formula that instantly removes grease, oil, dirt, and other contaminants. It contains no chlorinated solvents and boasts a high flashpoint of 204 °F, enhancing safety.
The cleaning solvent is suitable for use on all metal parts, most plastics, and painted surfaces, making it a versatile option for various maintenance tasks. Its high flashpoint and Zero VOC composition ensure it meets stringent environmental and safety standards for industrial use.
Product Details
| Brand | CRC |
|---|---|
| Container Type | pail |
| Included Components | Item |
| Item Form | Liquid |
| Item Volume | 5 gallons |
| Item Weight | 35 pounds |
| Manufacturer | CRC |
Additional Product Information
| Material Feature | Scented |
|---|---|
| Material Features | Scented |
| Model Number | 05067 |
| Size | 640 Fl Oz (Pack of 1) |
| Warranty Description | limited warranty |
| Additional Information | Important information Ingredients Industrial Degreaser |
Pros
- Zero VOC formula
- Instantly removes grease, oil, and dirt
- High flashpoint of 204 °F
- Suitable for most metal parts, plastics, and painted surfaces
Cons
- Has a scent, which may not be suitable for all environments
Perfect for industrial settings prioritizing a Zero VOC, high-flashpoint solvent that effectively cleans a wide range of contaminants from various materials.
What Buyers Often Overlook
Match the fluid to the washer system and cleaning method
The washer system should determine whether you choose an aqueous cleaner, a cold solvent, or a formula designed for a specific machine. Oil Eater is described as compatible with microbial smart washers and most parts washer systems, while CRC SmartWasher OzzyJuice is intended for the SmartWasher system and is water-based, non-flammable, and pH neutral. Zep R19835 is formulated for cold solvent cleaning tanks, so it fits a different operating method.
Master STAGES CLEAN 2029 is designed for cabinet-style spray washers and immersion tanks, and its description identifies compatibility with ultrafiltration and bioremediation. Zep Dyna 143 is specifically designed for several Zep parts washers and related equipment.
These distinctions matter because a fluid can clean effectively yet still be unsuitable for a pump, filtration setup, microbial system, spray washer, or heated process. Verify the washer manufacturer’s requirements before mixing or substituting formulas.
The Key Product Trade-Off
Balance solvent strength, odor, flammability, and corrosion protection
Solvent formulas prioritize rapid oil and grease removal, while aqueous formulas emphasize different handling characteristics and system compatibility. B’laster 128-PWS lists a 145-degree F high flashpoint and residue-free cleaning on metals, most plastics, and painted surfaces. CRC Parts Washer Solvent lists a 204-degree F high flashpoint and zero VOC positioning, while Zep Dyna 143 lists a 143-degree F flash point, low evaporation, and odorless solvents.
By contrast, CRC SmartWasher OzzyJuice is non-flammable, low odor, non-hazardous, and solvent-free according to the supplied details. Corrosion protection is a separate consideration: Von Haas includes rust inhibitors, and Master STAGES CLEAN 2029 is described as providing indoor corrosion inhibition on steel and cast iron.
If parts may wait before reassembly, that feature can be more relevant than residue-free solvent performance. Always follow the product label and washer safety guidance.
Best Parts Washer Fluid: Buyer's Guide
Fit, Dimensions, and Compatibility
Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.
Capacity, Output, and Operating Format
Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.
Materials, Construction, and Care
Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.
Included Components and Setup Needs
Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.
Which Should You Choose?
Choose Oil Eater if you want a water-based, pH-neutral fluid identified as compatible with microbial smart washers and most parts washer systems. Select CRC SmartWasher OzzyJuice for a water-based, low-odor, non-flammable formula with pH-neutral emulsifiers and surfactants. For solvent-based cleaning, B’laster 128-PWS and CRC Parts Washer Solvent specify high flashpoints and broad compatibility with metals, most plastics, and painted surfaces.
Choose Zep R19835 when your equipment uses a cold solvent tank, or Zep Dyna 143 when you operate a compatible Zep washer. For corrosion protection on stored steel or cast iron, consider Von Haas or Master STAGES CLEAN 2029.
Simple Green Pro HD fits buyers needing a concentrated, multipurpose cleaner that also supports parts washing.
Quick Buying Checklist
- Confirm the complete dimensions against the available space.
- Verify model, accessory, connection, and appliance compatibility.
- Match capacity or output to the expected amount of use.
- Compare materials and care instructions with the maintenance routine.
- Check the included components before planning setup or first use.
- Confirm listed power, water, storage, or installation requirements where applicable.
Frequently Asked Questions
What is the primary function of parts washer fluid?
Parts washer fluid is designed to effectively dissolve and remove grease, oil, grime, and other contaminants from metal parts. It facilitates easier cleaning and maintenance of machinery and components, ensuring they operate efficiently and prolonging their lifespan by removing abrasive residues.
Are there different types of parts washer fluids available?
Yes, fluids fall into two main categories: water-based and solvent-based. Water-based cleaners often use microbes or detergents and are generally safer and more environmentally friendly. Solvent-based cleaners are typically more aggressive and faster-acting for heavy-duty degreasing tasks.
What does "high flashpoint" mean for parts washer fluid?
A high flashpoint indicates that the fluid is less flammable and safer to use. It means the fluid requires a higher temperature to produce enough vapor to ignite. This reduces the risk of fire during operation, making it a safer choice for workshops.
Can parts washer fluid be used on plastics and painted surfaces?
Some parts washer fluids are safe for use on metals, most plastics, and painted surfaces, while others are not. It is crucial to check the product’s compatibility with different materials to avoid damage. Solvent-based cleaners, in particular, can be harsh on certain materials.
What is the benefit of a "corrosion inhibitor" in parts washer fluid?
A corrosion inhibitor helps protect cleaned metal parts from rusting or corroding after the cleaning process. This is particularly useful when parts will be stored or exposed to moisture before reassembly or further treatment, ensuring their integrity.
Final Words
Selecting the right parts washer fluid depends on your specific cleaning needs. For general degreasing and safety, water-based options are excellent. If you require aggressive cleaning power for heavy-duty contaminants, a high-flashpoint solvent-based fluid offers robust performance.
Always consider material compatibility and safety features for optimal results.