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Receive Up To 35% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ35 at checkout to receive 35% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Paint, Splash Guards, Select Ventvisors & Bug Shields, Springs & Spacers, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, CV Axles, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Shocks & Struts, Chassis, Jumpstarts, Air Filters, Oil Filters, Bearings & Seals, Engine Parts, Wash Accessories, Outdoor Lifestyle, Towing, Mini Air Compressors, Tire Repair Accessories, Mufflers, Grease/Oil, Additive Chemicals, P/S Pumps, Cooling Product, Timing Belts, Specialty Tools, Radiator Hose, Motor Mounts, Mirrors, Lug Nuts, Sealants/Adhesives, Fuel Filters, P/S Hoses, Gas Cans, Oil Change Accessories, Help, Wiper Motors, Loaner Tools, Air Compressors, Horns, Books, Distributors, Sun Control and Exhaust Adapters.

Use promotional code MMJ15 at checkout to receive 15% off the following categories: Test Equipment, Power Tools, Emergency Supplies, Electronics and Stereo & Accessories (MAP pricing Exclusions).

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes the following brands: WeatherTech, Champion, Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner, Philips, Fanmats, K-Source and BBK Performance. Valid online until 11:59 PM EST on 11/26/17.

Receive 10% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER10.

Receive 20% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP20.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.

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Red Line Synthetic Oil, SI-1 Complete System Cleaner, 15 oz. 8380078
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  • Part #: 60103|
  • SKU: 8380078

Available today

Pay in Store Available

    • Cleans to nearly 100% efficiency in one treatment
    • Reduces need for octane by up to two points

Red Line Synthetic Oil, SI-1 Complete System Cleaner, 15 oz.

SI-1 Fuel System Cleaner, 15 oz., is concentrated additive and powerful detergents. It cleans injectors, carburetors, valve and combustion chamber deposits with a concentrated blend of the most powerful high-temp and low-temp detergents available.
  • Cleans to nearly 100% efficiency in one treatment
  • Reduces need for octane by up to two points
  • Contains synthetic upper cylinder lubricant
  • Cleans pollution control valves



Red Line Synthetic Oil, SI-1 Complete System Cleaner, 15 oz. is rated 5.0 out of 5 by 5.
Rated 5 out of 5 by from Excellent Excellent product because beats out every fuel injection cleaner. Does what it says. Best if used once a month with shell v power gasoline.
Date published: 2016-11-18
Rated 5 out of 5 by from Red Line Fuel System Cleaner works great. My 1997 4Runner with 168K miles failed CA smog on NOx at 15 mph (Max = 512 Mine =1914). I decided to try Red Line Complete Fuel System Treatment and added the 15oz bottle before filling my tank with gas. After running the tank close to empty, I then refilled the tank with regular gas and drove to get the car retested. I passed the smog test this time with results, Max = 512.....Mine 101. In years past I have tried BG 44K and Guaranteed To Pass fuel treatments with little success. Imo, Red Line fuel treatment dropped my readings the most and the car seems to run better. On a side note, I poured the container into the gas tank without spilling or the need of a funnel .
Date published: 2016-11-16
Rated 5 out of 5 by from Excellent Product I started using the Red Line product when I had pinging in my mini van's engine when going up the hills at Lehigh University. I had tried high test fuel and other cleaners, but they never worked. After using the Red Line, the pinging disappeared and the performance of the vehicle was significantly improved. I have been using it since, about 14 years, on all my vehicles which includes Porsche, Subaru, Ford, and Jeep brands. Again, I can't say enough about how pleased I am with this Red Line Fuel system cleaner, it works!!
Date published: 2016-11-12
Rated 5 out of 5 by from This product performs! I have been using Red Line Complete System Cleaner for many years and am very pleased with it. My wife's van would knock terribly when going up steep hills. I tried putting high test fuel in the van in an attempt to stop the knocking, it did not work. I tried other products and they were unsuccessful as well. Finally I tried RedLine, and for the van the knocking completely disappeared and for at leasts 5,000 miles before re-treatment. I can't express how pleased I am with Red Line. I currently use it in all me cars and am very, very pleased.
Date published: 2016-09-14
Rated 5 out of 5 by from Best product on the market I use this product all of the time on both of my cars. Keeps the engine running smooth and increases the gas mileage.
Date published: 2016-08-31
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