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Comma Diesel Magic Fuel Additive & Injector Cleaner

Comma Diesel Magic Fuel Additive & Injector Cleaner


Comma Diesel Magic Additive - 400ml



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  • Description
  • Benefits
  • Shipping Explained

Comma Diesel Magic Fuel Additive & Injector Cleaner

Comma's Diesel Magic (DIM400M) is a highly concentrated fuel additive which rapidly removes harmful deposits in diesel powered vehicles.

Formulated with cetane improvers to restore lost power & acceleration, increase fuel economy and reduce engine emissions and black sludge. Using this product will also improve cold start performance and reduce ‘diesel knock’ noise.

This treatment works whilst you drive your car, so you can save your time and energy.

Ideal for use with ultra-low sulphur diesel fuel, but equally suitable for all light and heavy duty diesels including TDI, CDI and HDI types. Can also be used in common rail fuel injector systems.

Usage Directions:

  1. Pour entire contents into your fuel tank
  2. Diesel magic works while you drive
One 400ml bottle is sufficient to treat 60 litres of diesel.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Restores lost power and acceleration
  • Increases fuel economy
  • Reduces engine emissions
  • Cleans diesel injectors fast
  • Improves cold start performance
  • Helps reduce 'diesel knock' noise
  • Cetane improver boosts performance
  • Works while you drive
  • Treats 60 litres of diesel


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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