Black Friday - Cleaning Additives

Black Friday

Black Friday is here! 🖤 Thousands of products with a fair discount.

  • The offer is valid from 30th October to 30th November 2026.
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  • The offer is valid as long as the Goods are included in the Campaign or until the Goods are sold out during the Campaign. The Goods offer may be updated during the Campaign.
  • Stock for some products gets redistributed to customers in the Czech Republic, Slovakia, Austria, Hungary, and other countries where Alza delivers its products, based on the earlier order delivery time. This does not apply to regional/language-specific product versions.
  • Full Terms and Conditions of the campaign can be found here.
  • Alza reserves the right to change the terms and conditions of the campaign.
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44 Results
4.8 262×
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STP Diesel Injection Cleaner - 200 ml
Additive Substance - restores engine power, cleans injectors and intake valves
BLACK FRIDAY -28 % 6.12 € 8.58 €
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Order Code: AUPR241057
4.7 207×
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LIQUI MOLY Diesel engine cleaner 300ml
Additive Substance - removes harmful deposits from diesel engine components
BLACK FRIDAY -10 % 18.35 € 20.39 €
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Order Code: AUPR2651
4.9 605×
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VIF Super Diesel Summer Additive 500 ml
Additive Substance - a multifunctional anti-corrosive additive, prolongs the life of the fuel pump and nozzles
BLACK FRIDAY -10 % 8.59 € 9.59 €
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Order Code: AUPRA3134
4.8 100×
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STP Gasoline injection cleaner - 200 ml
Additive Substance - restores engine power, cleans injectors and intake valves
BLACK FRIDAY -21 % 6.45 € 8.17 €
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Order Code: AUPR241054
4.7 104×
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STP Diesel Particulate Filter Cleaner - 200ml
Additive Substance - releases soot from the filter, protects in urban traffic, extends service life, reduces soot emissions
BLACK FRIDAY -26 % 6.12 € 8.34 €
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Order Code: AUPR241058
4.8 89×
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Liqui Moly Injection Cleaner, 300 ml
Additive Substance - for cleaning gasoline injection systems, cleans valve deposits and distributions to reduce emissions and consumption
BLACK FRIDAY -10 % 17.91 € 19.90 €
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Order Code: AUPR241112
4.3 41×
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JLM Diesel Extreme Clean effective decarbonisation, 1 l
DPF Cleaner - volume 1 l, increases power, dissolves deposits, for diesel engines, for summer and winter season
BLACK FRIDAY -10 % 41.31 € 45.90 €
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Order Code: AUPR106978
4.8 88×
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LIQUI MOLY Engine system cleaner - petrol
Engine Cleaner - volume 300 ml,
BLACK FRIDAY -10 % 10.34 € 11.49 €
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Order Code: AUPR293618
4.7 22×
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JLM Diesel Injector Cleaner Pro Diesel Injector Cleaner, 250 ml
Injector Cleaner - 250 ml, increases performance, dissolves deposits, for diesel engines, for summer and winter season
BLACK FRIDAY -10 % 11.61 € 12.90 €
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Order Code: AUPR106979
4.6 49×
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Liqui Moly Additive for hydraulic jacks, 300 ml
Additive Substance - to reduce valve noise, cleans the valve oil channels, miscible with all engine oils
BLACK FRIDAY -10 % 14.48 € 16.09 €
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Order Code: AUPR241093
4.8 26×
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STP Petrol additive - 200 ml
Additive Substance - reduces petrol consumption, keeps engine clean, maintains intake valves
BLACK FRIDAY -16 % 6.82 € 8.17 €
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Order Code: AUPR241052
4.4 22×
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STP Diesel additive - 200 ml
Additive Substance - keeps injectors free from impurities and biofuels in fuel, maintains consistent engine power
BLACK FRIDAY -25 % 6.12 € 8.17 €
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Order Code: AUPR241055
4.9 42×
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LIQUI MOLY Air Scale Cleaner 200ml
Additive Substance - winter and summer, air scale cleaner, dissolves deposits, volume 200 ml
BLACK FRIDAY -10 % 12.51 € 13.90 €
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Order Code: AUPR329089
4.6 41×
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Liqui Moly Diesel Particulate Filter (DPF) Protection, 250 ml
Additive Substance - to extend filter life, prevents soot deposits, suitable for all diesel engines
BLACK FRIDAY -10 % 7.91 € 8.79 €
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Order Code: AUPR241113
5.0 19×
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RAVENOL Diesel Clean Extreme, 300 ml
Additive Substance to diesel - winter and summer, for cars and trucks, carburettor and throttle body cleaner, injection cleaner and fuel system cleaner, dissolves deposits, 300 ml volume is sufficient for 60 l
BLACK FRIDAY -10 % 7.82 € 8.69 €
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Order Code: AUPR110436
4.8 33×
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LIQUI MOLY Wear protection 125ml
Additive Substance - reduces friction, improves engine performance, saves fuel
BLACK FRIDAY -10 % 12.95 € 14.39 €
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Order Code: AUPR2624
4.7 52×
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LIQUI MOLY Oil additive 300ml
Additive Substance - additive for smooth operation of the whole unit
BLACK FRIDAY -10 % 10.70 € 11.89 €
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Order Code: AUPR2635
5.0 6×
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LIQUI MOLY Petrol stabiliser 250ml
Additive Substance for petrol - winter, engine cleaner, volume 250 ml
BLACK FRIDAY -10 % 18.81 € 20.90 €
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Order Code: AUPR329086
4.8 22×
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LIQUI MOLY Diesel additive for improved acceleration 250ml
Additive Substance - additive to improve the combustion of diesel engines
BLACK FRIDAY -10 % 13.04 € 14.49 €
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Order Code: AUPR2648
4.7 42×
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LIQUI MOLY Radiator Cleaner 300ml
Radiator Cleaner - for cooling and heating systems
BLACK FRIDAY -10 % 9.26 € 10.29 €
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Order Code: AUPR2640
4.7 38×
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SONAX Injection and carburettor cleaner, 250ml
Additive Substance - serves to prevent problems such as starting, engine idling, weak engine response to throttle position, and power loss
BLACK FRIDAY -15 % 7.90 € 9.39 €
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Order Code: AUPR3729
4.5 23×
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SONAX Oil additive, 250ml
Additive Substance - an anti-friction agent producing a highly resistant sebum on all friction and slippery surfaces
BLACK FRIDAY -14 % 9.90 € 11.59 €
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Order Code: AUPR3748
4.4 10×
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LIQUI MOLY Wear Protection 200ml
Additive Substance for oil - winter and summer, engine cleaner, reduces friction, volume 200 ml
BLACK FRIDAY -10 % 18.26 € 20.29 €
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Order Code: AUPR329088
4.9 13×
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SONAX Diesel Fuel System Cleaner, 250ml
Additive Substance - ensures optimal combustion, removes deposits from the injection and combustion chambers of the piston, cleans the entire fuel system, protects against corrosion and wax formation
BLACK FRIDAY -20 % 7.90 € 9.89 €
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Order Code: AUPR3716