Protec Engine Flush DETOX4®

Base price with tax


Why use engine flush?

Every time any engine is started, carbon and other organic contamination is left behind in the motor oil. The engine is flushed because an oil change only removes the old oil and refills it with new oil.

An oil change process does almost nothing to remove the majority of contamination from the engine.

Over time, these contaminants will build into deposits that can reduce performance, can cause a motor to burn oil, can lower compression, and can lower gas mileage.

DETOX4® will break contamination down to a third of a micron and after use the engine will be restored, cleaned, protected, and running at optimal efficiency.


Does it work with my vehicle’s oil type?

Safe to use in regular motor oil and full synthetic motor oil.

Recommended to use DETOX4® before switching to full synthetic from regular motor oil.

Each bottle contains 375ml (12.68oz) and can treat a motor with up to 6 quarts of oil.


About Our Products

The genuine PRO-TEC Autocare products are only sold by our company on our website. The products are not sold on Ebay or Amazon because a fee per sale is something that we refuse to pass along to our customers. Our products are no longer sold in auto parts stores because we refuse to pass along a marked up price to our customers. As a result, our website is the only place in the world to buy our authentic and patented PRO-TEC Autocare product line.

What does engine flush do?

  • Cleans the entire engine oil lubrication system to restore acceleration and performance.
  • Removes contamination from piston rings and valve seals to reduce exhaust smoke.
  • Protects valve seals, lifters, and camshafts (removes lifter ticking noise).
  • Boosts engine compression.
  • Forms a long-lasting protective coating to reduce heat and friction.
  • Extends the life of any engine by protecting, cleaning and restoring gaskets, o-rings, and bearings.


How does engine flush work

How does engine flush work?

The solvents, detergents, and atomized cleaners in DETOX4® fully dissolve deposits down to a third of a micron. This means you never have to drop the oil pan, clean an oil screen, or worry about chunks of contamination breaking free and floating around in your engine.

Chemicals in the engine flush formula restore the existing, dirty oil’s viscosity to 96% to help protect the engine during the procedure.

Other chemicals also protect the internal components, gaskets, o-rings, rubber hoses and aluminum. It uses an atomization chemical process to effectively break down gum, varnishes, residues and other carbon deposits in any motor.

The engine flush also uses an emulsification agent to bond with any water in the oil or motor. The chemicals bond with these unwanted contaminates after breaking them down to a third of a micron. These tiny particles are then held in suspension inside the dirty oil.

All of the contaminates & emulsified water are then removed from the vehicle during a regular oil change procedure.

Is engine flush safe for my vehicle?

  • DETOX4® is safe to use in any vehicle because it fully dissolves contamination and protects the engine by boosting the old oil’s viscosity up to 96%.
  • It will not corrode or dissolve aluminum, rubber hoses or critical engine components.
  • This is a professional chemical tool that has been developed to match or exceed the OEM specifications of Acura, Audi, BMW, Buick, Bugatti, Cadillac, Chevrolet, Chrysler, Citroen, Dodge, Ferrari, Fiat, Ford, General Motors, GMC, Honda, Hummer, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, Kia, Land Rover, Lexus, Maybach, Mazda, Mercedes-Benz, Mercury, Mitsubishi, Nissan, Oldsmobile, Peugeot, Pontiac, Porsche, Rolls Royce, Saab, Saturn, Subaru, Suzuki, Toyota, Volkswagen, and Volvo.



Normal: $39.95
Sale: $27.95


9 out of 10 people recommend Protec Engine Flush DETOX4®

Read Customer Reviews

Engine Flush Certification

With over a million motors that have used Protec Engine Flush DETOX4® there has not been a single customer complaint.

That is because DETOX4® is safe to use in any vehicle, fully dissolves contamination, removes engine sludge, and fully protects the motor by boosting the old oil’s viscosity up to 96%.

Our formula has been refined since 1982 and is unlike any other chemical tool out there:

  • No product uses the same chemicals we do.
  • Our formula is patented and manufactured by us, PRO-TEC Autocare.
  • Is used at major automotive dealerships and repair facilities.

REACH is the European Community Regulation on chemicals and their safe use (EC 1907/2006). They deal with the Registration, Evaluation, Authorization and Restriction of Chemical substances in Europe. All of our products have been evaluated by REACH and approved with the following: 02292243 European Regulation Number.

ISO:9001 Certification means our manufacturing process adheres to a global set of management and quality standards while meeting statutory and regulatory requirements. This certification also means the contents of each can are identically equal.

Protec engine flush certification

Is it necessary?

  • An oil change does not provide cleaning to critical engine components.
  • Any contamination that is not drained out of the engine during an oil change will be left behind in the motor.
  • After adding new oil to the motor, the oil then mixes with the contamination immediately.
  • Over time this contamination can turn into engine sludge and form deposits.
  • Sludge and deposits will reduce performance, fuel economy, and can cause critical component failure.
  • To remove contamination, sludge, and deposits use Protec Engine Flush DETOX4® to restore performance or prolong the lifespan of any motor.


oil sludge in motor


Clean motor after using engine flush



When to use Engine Flush DETOX4®

  • The vehicle is burning oil, smoking, or has more exhaust fumes than allowed by law.
  • Preventative maintenance to remove contamination.
  • Motor is making "ticking" or "clicking" sounds.
  • Vehicle does not accelerate properly on a flat surface or uphill, gas mileage is below manufacture range, idles rough, or has hard starts.
  • Use to lower exhaust if the vehicle must pass SMOG or other environmental exhaust emission tests.
  • Use to restore piston compression if the engine has below the manufacturers specification for compression.
  • Use to remove water or moisture from the oil lubrication system, often aluminum hydroxide (white powder) is an indication of water in the motor.
  • Use to fully clean the crankcase breather system.
  • Use if the vehicle has any gum, varnish or resin in the valves, rockers or cam shaft areas.
  • Use to clean the piston rings, crankcase, valvetrain, and camshaft areas.
  • Use as Step 1 in the 2-step Stop Burning Oil Kit

"I feel compelled to write to voice my gratitude for the many times the products have come to the rescue of myself and my technicians in the solving of various running problems encountered on certain vehicles."
- Ballelmys Ford

ford f150 engine flush review


Normal: $39.95
Sale: $27.95


Video - Ford Dealer Employee from Skeptic to Customer


Video - GMC Envoy Compression Restored in this Before and After Test:


Video: +26 PSI & Reduced Ticking in Jeep Wrangler 2.5L (Compression & Road Test)


Video - Before and After in a Kubota L3010 Tractor with a Diesel Motor:


Video - Professional Mechanics Review of Protec’s DETOX4®:


Video: Compression Test Shows +130 PSI Restored in Jeep Liberty 3.7L


Video - Before and After Compression Test in an Allis Chalmers C Tractor:


Video - Customer Review After Using in a Kubota R400 Tractor:


How to use Protec Engine Flush:

Step-by-step Directions

  1. Empty (1) bottle into the motor.
  2. (1) bottle of DETOX4® treats up to 6 quarts of oil.
  3. Start the vehicle and idle or drive it for 10 minutes.
  4. Remove the oil drain plug and oil filter to drain the oil.
  5. Reinstall the drain plug, install a new oil filter, then refill the vehicle with new motor oil.

*Do not overfill motor oil. If necessary, remove motor oil before adding.

**Vehicle does not need to be warmed up prior to use.



directions on how to use engine flush


Customer Reviews

"The use of Protec products certainly benefits the Mazda vehicles and our after sales service finds your excellent back up service second to none."
-Wey Valley Mazda

Mazada engine flush review


Normal: $39.95
Sale: $27.95


The best engine flush formula

Protec Engine Flush


For the first time in over a decade the formula for DETOX4® has been improved. Decades of research has now made the formula even more effective at eliminating engine sludge, breaking down contamination, and dissolving hard deposits that form over time. The new formula has started shipping in March of 2016.

In addition to increasing the effectiveness, the new formula also received an improvement to the protective coating to make it last 50% longer than the original formula. This means that the benefits from one application can last for up to 9,000 miles.

The improvements make the formula now more effective at removing or eliminating engine sludge, contamination and hard deposits in vehicles that are burning oil, have bad compression, or have low oil pressure.



  • Safe to use in any gasoline or diesel motor.
  • Safe to use with regular or synthetic motor oil.
  • Recommended Use: As needed or every 10,000 miles.
  • (1) bottle is 375ml (12.68oz) treats up to 6 quarts of motor oil.
  • Do not overfill. Remove oil before adding if necessary.
  • Material Safety Data Sheet (MSDS)
  • Contains: 40-45% Hydrotreated Light Petroleum Distillates (works well on hard-to clean organic contamination such as carbon deposits, heavy oil, grease, tar, and waxes), 20%-25% Steam-cracked Petroleum Distillates (works well on hard-to clean organic contamination such as carbon deposits, heavy oil, grease, tar, and waxes), 10-15% Solvent Naphtha (Solvent dissolves ethyl cellulose, polyvinyl butyral, many oils, alkaloids, gums, and natural resins), 10-15% Steam-cracked and Stripped Petroleum Distillates (complex hydrocarbon detergent cleaner), 10-15% Heavy Naphtha Petroleum Extracts Solvent (Solvent dissolves ethyl cellulose, polyvinyl butyral, many oils, alkaloids, gums, and natural resins), 1-5% Chlorparaffine C14-C28 (solvent complex mixture of chloride: polychlorinated n-alkanes biomolecules).
  • UPC: 609788749608 #engineflush
  • Previous label engine flush  Previous label and formula.

"We continue to add it at every service and never have never had one complaint. I have recommended it to a few of my friends in the trade and if necessary would gladly speak to anyone who may be thinking of trying it."
-David Morrison | Land Rover

land rover engine flush review


Normal: $39.95
Sale: $27.95


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