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Liqui Moly Pro-Line Engine Flush - 500ml

Liqui Moly Pro-Line Engine Flush - 500ml

Cleans the engine from the inside and removes deposits from oil holes, bearings, the piston ring a...

Best current price£5.34from Demon Tweeks

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Product Information

Full details

The Liqui Moly Pro-Line Engine Flush (500ml) is an essential treatment for vehicle owners aiming to thoroughly clean their engine's internal components, ensuring optimal performance and longevity. Its primary function is to dissolve and remove harmful deposits, allowing fresh engine oil to perform at its peak; however, it is crucial to use this product precisely as directed, immediately before an oil and filter change.

All features

Model Part Number2427
BrandLiqui Moly

Extended Product Information

FAQs

What types of engines can I use Liqui Moly Pro-Line Engine Flush on?

It is suitable for all gasoline and diesel engines, including those with particulate filters (DPF/GPF) and vehicles where the toothed belt runs in oil.

How much engine oil does one 500ml bottle treat?

One 500ml bottle is sufficient for up to 5 liters of engine oil.

When should I add the engine flush?

Add it to the motor oil at operating temperature, just before you plan to perform an oil change.

How long should I let the engine idle after adding the flush?

Allow the engine to idle for 10 to 15 minutes, depending on how contaminated your engine oil is. Do not drive the vehicle during this period.

Is it safe for my turbocharger and catalytic converter?

Yes, the product has been tested and found safe for use with catalytic converters and turbochargers, as well as diesel particulate filters.

Do I need to change my oil filter after using this product?

Absolutely. After using the engine flush and idling the engine, you must change both the oil and the oil filter to ensure all contaminants are removed and to allow the new oil to perform optimally.

Can I leave the flush in my engine for longer than recommended?

No, it is crucial to follow the recommended idle time (10-15 minutes) and then immediately proceed with the oil and filter change. Leaving it in longer could potentially lead to issues as the suspended deposits should be removed promptly.

Troubleshooting

Engine still sounds rough or noisy after applying the flush and changing oil.

Ensure you allowed the engine to idle for the full 10-15 minutes after adding the flush. Also, verify that a new, quality oil filter was installed, and the engine was refilled with the correct type and amount of fresh engine oil. In heavily contaminated engines, a single flush might not remove all stubborn deposits, but significant improvement should still be noticeable. Consistent maintenance is key.

Concern about the flush damaging engine seals or other components.

The Liqui Moly Pro-Line Engine Flush is specifically formulated not to attack common sealing materials found in engines. It has also been extensively tested for safety with catalytic converters, turbochargers, and DPF/GPF systems. When used according to instructions, it is safe for your engine's components.

Unsure if the flush worked, as the drained oil looked very dirty.

The fact that the drained oil looked very dirty is actually an indication that the flush was highly effective! The flush suspends accumulated deposits and contaminants into the old oil, which are then drained away. This is precisely how it cleans the engine internally. The goal is for the *new* oil to remain cleaner for longer.

Pros and Cons

Pros

  • Thorough Deposit Removal: Deep cleans the engine interior, clearing sludge and varnish.
  • Improved Engine Health: Contributes to reduced wear, lower oil consumption, and better compression.
  • Enhances New Oil Performance: Allows new oil to fully lubricate and protect the engine without immediate contamination.
  • Wide Compatibility: Safe for a vast range of modern and older gasoline and diesel engines, including those with DPFs and turbos.
  • Ease of Use: Simple application process requiring minimal mechanical skill.

Cons

  • Requires Immediate Oil Change: Mandates an immediate oil and filter change, adding to the overall service cost and time.
  • Engine Idling Required: Engine must idle for 10-15 minutes after application, which may not always be convenient.
  • Not a Preventative Additive: Designed as a pre-oil change cleaning treatment, not a continuous-use oil additive.

Setup, Compatibility & Care Instructions

Proper application of the Liqui Moly Pro-Line Engine Flush is crucial for maximizing its benefits and ensuring engine safety.

Setup and Application Steps:

  1. Warm Up Engine: Ensure your vehicle's engine is at operating temperature. This allows the current engine oil to be fluid and helps the flush distribute effectively.
  2. Add Flush: With the engine still running or immediately after turning it off, carefully pour the entire 500ml contents of the Liqui Moly Pro-Line Engine Flush into the engine's oil filler opening. One 500ml bottle is designed for up to 5 liters of engine oil.
  3. Idle Engine: Restart the engine (if it was turned off) and allow it to idle for 10 to 15 minutes. The exact duration depends on the perceived degree of contamination within the engine. Do not drive the vehicle during this time.
  4. Oil & Filter Change: Immediately after the idling period, turn off the engine. Proceed to drain the old engine oil completely and replace the old oil filter with a new one. This step is critical to remove the dissolved contaminants and the flush liquid itself from the engine.
  5. Refill with Fresh Oil: Fill the engine with the manufacturer-recommended new engine oil.

Compatibility:

  • Engine Types: Universally compatible with all gasoline and diesel engines.
  • Particulate Filters: Safe for use in vehicles equipped with Diesel Particulate Filters (DPF) or Gasoline Particulate Filters (GPF).
  • Oil-Controlled Systems: Ensures perfect function of hydraulic oil-controlled systems like Variable Valve Timing (VVT) and VANOS.
  • Toothed Belts in Oil: Can be safely used in engines where the timing belt runs directly in oil.
  • Sealing Materials: Formulated not to attack common engine sealing materials.
  • Exhaust Systems: Tested for use with catalytic converters and turbochargers without causing damage.
  • Motor Oils: Compatible with all commercially available motor oils.

Care:

  • Store the product in a cool, dry place away from direct sunlight.
  • Keep out of reach of children and pets.
  • Always refer to your vehicle's owner's manual for specific oil change procedures and recommendations.
  • Dispose of used engine oil and filter responsibly according to local regulations.

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