Best Parts Cleaner Solvent for Parts Washers and Shop Cleanup

#1 · Best Overall

1. B’laster Parts Washer 5-Gallon

• Volume: 5 gallons
• Size: 5 Gallon
• Form: Liquid

Best for: Bulk garage rebuild solvent.

Why it ranks #1: Explicitly made for parts washing, this five-gallon solvent lists a high flashpoint, no residue, and compatibility with metals, most plastics, and painted surfaces.

A high-flashpoint formula that works on metals, most plastics, and painted surfaces gives this five-gallon B’laster solvent broad parts-washer utility. It breaks down oil, grease, and grime, helping clear buildup during maintenance, rebuilds, and paint preparation without leaving residue behind.

The stated compatibility with metals, most plastics, and painted surfaces helps cover varied parts in a repair workflow, while the no-residue claim supports preparation before painting or reassembly. Its concentrated liquid formula comes in a five-gallon volume, making it a bulk option for a garage or workshop with recurring cleaning needs. B’laster also says it breaks down tough oil, grease, and grime quickly, which can reduce effort spent on dirty parts.

Skip it if you need a small ready-to-spray cleaner for isolated jobs; this comes as five gallons of liquid solvent.

Choose this B’laster solvent for recurring garage or workshop maintenance, especially when cleaning parts before painting or reassembly. Its broad listed surface compatibility is useful, but the five-gallon volume suits ongoing use better than occasional small jobs.

Listed on Amazon as: 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

#2 · Best One-Gallon

2. B’laster 128-PWS Solvent

• Volume: 1 gallons
• Size: 128 Fl Oz (Pack of 1)
• Form: Liquid

Best for: Residue-free washer solvent.

Why it ranks #2: This one-gallon parts washer solvent lists a 145°F flashpoint, residue-free cleaning, and use on metals, most plastics, and painted surfaces.

A 145°F high-flashpoint formula that leaves parts residue-free distinguishes this one-gallon B’laster solvent for parts-washer work. It cuts through cutting oil, motor oils, and grease, and is listed for metals, most plastics, and painted surfaces, making it useful across varied repair parts.

The 145°F high flashpoint and stated compatibility with metals, most plastics, and painted surfaces help define where this solvent fits in a parts-cleaning workflow. Its residue-free finish is useful when parts are headed for painting or further work, while the listed action against cutting oil, motor oils, and grease addresses common shop soils. The one-gallon liquid size is a more limited supply than a five-gallon pail for recurring washer use.

Skip it if you run a washer through frequent shop jobs and need more supply; CRC Parts Washer Solvent comes in five gallons.

Choose this B’laster solvent for parts-washer users who want residue-free cleaning and broad listed material compatibility. The one-gallon container fits more limited use; shops handling repeated high-volume cleaning may need a larger supply.

Listed on Amazon as: B'laster 128-PWS Industrial Strength Parts Washer Solvent

#3 · Highest Flashpoint

3. CRC Parts Washer Solvent

• Volume: 5 gallons
• Size: 640 Fl Oz (Pack of 1)
• Form: Liquid

Best for: Zero-VOC shop parts washer.

Why it ranks #3: The five-gallon washer solvent has a listed 204°F flashpoint and contains no chlorinated solvents, with use stated for metal, most plastic, and painted parts.

CRC’s zero-VOC formula contains no chlorinated solvents and has a 204°F high flashpoint, setting it apart for buyers prioritizing those specifications. Supplied in a five-gallon pail, it instantly removes grease, oil, dirt, and other contaminants from metal parts, most plastics, and painted surfaces.

The 204°F high flashpoint and zero-VOC, no-chlorinated-solvents formula give shop buyers concrete chemical specifications to consider when selecting washer solvent. CRC lists use on all metal parts, most plastics, and painted surfaces, helping cover mixed repair components. Its five-gallon pail supports a parts-washer workflow with a larger supply, while the stated removal of grease, oil, dirt, and other contaminants addresses varied shop grime.

Skip it if you only clean occasional small parts and prefer spray application; CRC Quick Clean Safety Solvent comes in a 19-ounce aerosol.

CRC suits shops seeking a five-gallon parts-washer solvent with a stated zero-VOC formula, no chlorinated solvents, and broad parts compatibility. Its pail format is less convenient for buyers who mainly need occasional, targeted spray cleaning.

Listed on Amazon as: CRC Parts Washer Solvent – Zero VOC, Industrial-Grade Cleaner – 5 Gallon

#4 · Best Washer-System Fit

4. Zep Dyna 143 Solvent

• Size: 128 Fl Oz (Pack of 5)
• Form: Liquid

Best for: Zep washer-system operators.

Why it ranks #4: Designed for named Zep parts washer systems, this five-gallon solvent lists a 143°F flashpoint and can be used with a brush or as a dip.

Compatibility with Zep Dyna Clean, Dyna Brute FB, Super Brute FB, Brake Buggy, and Dyna Mate gives this five-gallon Dyna 143 solvent a specific washer-system role. Its odorless solvents dissolve and flush away grease, oil, and soil, and it can be used with a brush or as a dip.

The named Zep washer compatibility helps operators match the solvent to listed equipment, while brush or dip application offers a manual alternative for cleaning parts. In a filtered Zep parts washer, the solvent is continuously recycled, supporting repeated use within that workflow. Its low evaporation rate and vapor pressure are stated to assure minimal evaporative loss and employee exposure; the 143°F flash point is higher than the listed mineral-spirit comparison of 107°F.

Skip it if you need a solvent explicitly listed for most parts washer systems; Oil Eater Parts Washer Fluid names that broader compatibility.

Dyna 143 fits operators of the named Zep washers who want brush or dip application as well as filtered-solvent recycling. Check the equipment match: its supplied compatibility list focuses on specific Zep models.

Listed on Amazon as: Zep Dyna 143 Parts Washer Solvent – 5 Gallon (1 Bucket) 36635 – Designed for use in Part Washes

#5 · Best Water-Based

5. Oil Eater Parts Washer Fluid

• Size: 640 Fl Oz (Pack of 1)
• Form: Liquid

Best for: Microbial-washer system fluid.

Why it ranks #5: This five-gallon, pH-neutral water-based fluid is described as suitable for microbial smart washers and most parts washer systems.

Water-based, pH-neutral fluid that is safe in microbial smart washers gives Oil Eater a clear fit for shops using that cleaning system. The five-gallon liquid also suits most parts washer systems and handles oil, grease, grime, and dirt on parts or tools.

Compatibility with microbial smart washers and most parts washer systems lets this fluid fit into more than one listed washer setup. Its water-based formula is specified for parts cleaning, tool cleaning, and heated cleaning, supporting different shop tasks without switching products. The pH-neutral, non-toxic, unscented description may matter in work areas where those formula characteristics are preferred; the five-gallon container provides a substantial supply for repeated cleaning.

Skip it if you want a ready-to-use spray for a single part; Gumout Regane comes in a 15-ounce spray can.

Pick Oil Eater when your workflow centers on a microbial smart washer or another compatible parts washer, including heated cleaning. It is a five-gallon water-based fluid, so it is a system supply rather than a compact spot-cleaning spray.

Listed on Amazon as: Oil Eater Parts Washer Fluid, Water-Based Heavy Duty pH Neutral, Smart Microbe Safe Parts Cleaner Systems, 5 Gallons

#6

6. Oil Eater Original Cleaner

• Volume: 5 gallons
• Size: 640 Fl Oz (Pack of 1)
• Form: Liquid

Best for: Concentrated multi-surface degreasing.

Why it ranks #6: The concentrated five-gallon water-based cleaner can be used in parts washers, but its listing presents broader degreasing uses rather than a dedicated parts-washer formula.

A concentrated, water-based formula that can be used in equipment, parts washers, and pressure washers gives Oil Eater several listed cleaning routes. The five-gallon cleaner/degreaser removes grease, oil, dirt, and grime, and is also specified for tools, engines, parts, and outdoor oil stains.

Its listed use in equipment, parts washers, and pressure washers lets buyers apply the concentrated liquid through different cleaning workflows. The product is also specified for degreasing tools, engines, and parts, as well as removing stains from concrete, pavers, and asphalt, extending its role beyond washer parts. Water, surfactants, and grease-cutting agents are listed ingredients; the safety information says not to use it on hot or warm aluminum, glass, leather, silk, or suede.

Skip it if you need a product specifically described as pH-neutral washer fluid; Oil Eater Parts Washer Fluid has that stated specification.

Choose this Oil Eater concentrate for buyers who want one cleaner listed for parts washers, pressure washers, tools, engines, and outdoor stains. Respect its stated restriction against use on hot or warm aluminum and several delicate materials.

Listed on Amazon as: Oil Eater AOD5G35438 Original 5 Gallon Cleaner/Degreaser, light yellow, 640 Fl Oz (Pack of 1)

#7

7. Gumout 540001 Parts Cleaner

• Volume: 15 fluid oz
• Size: 15 oz (Pack of 1)
• Form: Spray

Best for: Automotive brake and carburetor spray.

Why it ranks #7: This 15-ounce aerosol targets unpainted metal automotive parts and dries fast, but it is not listed as a circulating parts washer fluid.

A powerful jet spray that penetrates gum, varnish, sludge, oil, and brake fluid makes Gumout Regane suited to stubborn automotive deposits. It cleans unpainted metal parts, carburetors, air intakes, throttle bodies, brake drums, rotors, and calipers, then dries fast for focused maintenance.

The powerful jet spray is specified to penetrate stubborn buildup, helping direct cleaner into listed automotive parts such as carburetors, throttle bodies, and brake components. Its fast-drying formula supports a focused cleaning sequence, while the stated absence of CFCs and chlorinated solvents may suit buyers avoiding those ingredients. This 15-ounce spray is for unpainted metal parts, so its stated application does not extend to painted surfaces.

Skip it if you need a cleaner listed for painted surfaces; B’laster Parts Washer Solvent works on metals, most plastics, and painted surfaces.

Gumout fits automotive maintenance involving unpainted metal, including carburetors, air intakes, and brake parts. Its fast-drying spray suits targeted jobs, but the listed surface scope is unpainted metal rather than painted components.

Listed on Amazon as: Gumout 540001 Regane Parts Cleaner and Degreaser, 15 oz.

#8

8. CRC Quick Clean 03180

• Volume: 5 gallons
• Size: 19 oz (Pack of 1)
• Form: Spray

Best for: Targeted equipment degreasing.

Why it ranks #8: The 19-ounce aerosol removes oil, grease, and grime from equipment and parts, but its general-purpose spray format is less suited to a parts washer.

A spray can makes CRC Quick Clean a targeted option for removing oil, grime, sludge, grease, tar, and other contaminants from equipment. Its listed applications span motors, air tools, mechanical brakes, chains, machinery, bearings, generators, and more, bringing one general-purpose degreaser to varied maintenance tasks.

The spray format supports directed application to the listed equipment, from motors and air tools to mechanical brakes, chains, and bearings. CRC describes the formula as a chlorinated base and specifies residue-free cleaning, which may suit components where a residue-free finish is wanted. At 19 ounces, the can is a compact alternative to bulk washer fluids, but the listing presents it as an aerosol cleaner rather than a five-gallon parts-washer supply.

Skip it if you need bulk fluid for a parts washer; CRC Parts Washer Solvent is supplied in a five-gallon pail.

Choose CRC Quick Clean for targeted maintenance on listed equipment such as motors, air tools, brakes, and bearings. The 19-ounce aerosol is not a bulk washer supply, and its chlorinated formula matters to solvent selection.

Listed on Amazon as: CRC Quick Clean Safety Solvent And Degreaser 03180 – 19 WT OZ, Clear, Aerosol Cleaner – Industrial Cleaners And Degreasers