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RED LINE SI-1 Fuel System Cleaner

RED LINE SI-1 Fuel System Cleaner


RED LINE SI1 Fuel System Clean - 443ml Bottle

443ml Bottle


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  • Description
  • Benefits
  • Shipping Explained

RED LINE SI-1 Fuel System Cleaner

SI-1's injector and valve detergent is a concentrated package of the most powerful high-temperautre detergents available to clean petroleum fuel injectors, intake valves and combustion chambers.
SI-1 Complete Fuel System Engine Cleaner can clean injectors to nearly 100% efficiency in one treatment. The cleansing effect on injector deposits can raise fuel economy approximately 12% or even greater, depending on the condition of the injectors.
Athough many petroleums advertise injector cleanliness, GM presented a paper to the SAE which indicates that their customers encountered injector plugging with all major brands of petroleum (SAE 861533)

Dosage: 1 (443ml) bottle treats 100 Gallons (378.54 Litres) of petrol

This product is for use in petrol engines only and is not suitable for diesel engines.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Prevents fuel system rust
  • Cleans intake valve deposits
  • Lubricates upper cylinder and valves
  • Reduces pre-ignition and run-on
  • Cleans emission control systems
  • Stabilizes petrol and prevents carburettor icing
  • Safe for all petrol vehicles


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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