Red Line 60103 SI-1® Complete Fuel System Cleaner - 443ml
Red Line concentrated fuel-system cleaner for petrol vehicles using fuel injection, GDI injection or carburettor fuel systems applications listed in the compatibility table.
SI-1® Complete Fuel System Cleaner uses a concentrated detergent package designed to clean deposits from fuel injectors, including GDI injectors, carburettors, intake valves and combustion chambers.
Red Line also states that SI-1® helps improve fuel stability and reduce gum and varnish formation. The formula contains a synthetic upper-cylinder lubricant and is suitable for use with unleaded, reformulated and oxygenated petrol.
For a concentrated fuel-system clean-up, Red Line recommends adding one full 443ml / 15oz bottle to a nearly empty fuel tank before refilling with up to approximately 76 litres / 20 US gallons of petrol. For regular maintenance, Red Line's product guidance recommends half a bottle approximately every 1,500 miles.
- Product type: Complete petrol fuel-system cleaner
- Primary use: Cleaning deposits from the fuel and induction system
- Location / system: Petrol fuel system
- Brand: Red Line Synthetic Oil
- Product reference / SKU: 60103
- Container size: 443ml / 15 US fl oz
- Fuel type: Petrol
- Fuel-system compatibility: Fuel injection, GDI and carburettor systems
- Cleaning areas: Fuel injectors, carburettors, intake valves and combustion chambers
- Fuel compatibility: Unleaded, reformulated and oxygenated petrol
- Additional protection: Contains synthetic upper-cylinder lubricant
- Fuel-stability function: Helps reduce gum and varnish formation
- Treatment guidance: One full bottle for up to approximately 76 litres / 20 US gallons for concentrated cleaning
- Maintenance guidance: Half a bottle approximately every 1,500 miles
- Application note: Red Line states SI-1® is safe for continual use
Fitment advice: SI-1® is an application-based petrol fuel-system additive rather than a vehicle-specific replacement component. It is suitable for supported petrol fuel systems including conventional injection, GDI and carburettor applications.
Other items to consider: When servicing the fuel and ignition system, you may also want to consider purchasing a replacement fuel filter, air filter, spark plugs and other routine service components where required.
Useful tools / consumables: Fuel-safe funnel, protective gloves and workshop towels.
Difficulty guide: DIY Difficulty: Easy. SI-1® is added directly to the petrol tank before refuelling, with no fuel-system disassembly required.
Why Red Line? Red Line Synthetic Oil is known for high-performance lubricants, fluids and additives developed for demanding road, track and motorsport use. Red Line products are chosen by enthusiasts and workshops for their focus on protection, thermal stability, shift quality, friction control and application-specific performance.
What’s in the bottle: One 443ml / 15 US fl oz bottle of Red Line SI-1® Complete Fuel System Cleaner.
Service notes: Add SI-1® to the fuel tank before filling. For concentrated clean-up, use one full bottle in a nearly empty tank and refill with up to approximately 76 litres / 20 US gallons of petrol. Red Line's published maintenance recommendation is half a bottle approximately every 1,500 miles.
| Make | Model | Sub Variant | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Various | Petrol vehicles | Fuel injected / GDI / carburettor | — | — | — | — | Petrol | — | Complete fuel-system cleaner suitable for petrol injection, GDI and carburettor applications. For concentrated treatment, one 443ml bottle may be used with up to approximately 76 litres / 20 US gallons of petrol. |
| Vehicle Manufacturer | OEM Reference / Specification |
|---|---|
| Red Line | 60103 — SI-1® Complete Fuel System Cleaner, 15 US fl oz / approximately 443ml |
| Red Line | Cleans fuel injectors including GDI, carburettors, intake valves and combustion chamber deposits |
| Red Line | Suitable for unleaded, reformulated and oxygenated petrol |
| Red Line | Contains synthetic upper-cylinder lubricant |
| Red Line | Enhances fuel stability and helps reduce gum and varnish formation |
| Red Line | One full 443ml bottle for concentrated treatment with up to approximately 76 litres / 20 US gallons of petrol |
| Red Line | Maintenance guidance: half a bottle approximately every 1,500 miles |
| Red Line | Safe for continual use and suitable for oxygenated fuels |
| Universal application | No direct vehicle-manufacturer OE replacement reference; aftermarket petrol fuel-system cleaner and maintenance additive |