Best Fuel Performance Additive

Berryman Products 2640 4-Step Professional Air & Fuel System Maintenance Kit,

3-in-1 fuel additive keeps new engines clean and improves vehicle's performance.
Improves fuel economy an average of 3.2 percent.
Increases horsepower an average of 2.6 percent.
Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively).
Prevents rough idle, hesitation and stalling.

Diesel RV engine additive and cleaner increases fuel economy by up to 3 percent.
Reduces smoke and soot by up to 50 percent.
Injector cleaner for diesel RV engine plus stabilizes diesel fuel for storage for up to 1 year.
Improves the lubricity of ultra-low sulfur diesel (ULSD).
Cleans fuel injectors and improves hill climbing performance.

MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine....
IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XPD formula. This diesel fuel....
CLEANS INJECTORS: When your fuel injectors build up with residue, your engine usually doesn’t run as efficiently. Opti-Lube XPD formula cleans....
ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XPD formula delivers. It works to improve the performance of your truck all year....
CONVENIENT 6 PACK: With your purchase, you’ll receive 6 bottles of Opti-Lube XPD Formula Diesel Fuel Additive. Each bottle comes with 8 oz. of....

Made from Pennzoil's patented gas-to-liquid PurePlus Technology combined with a high-performance additive system for complete protection.
Full synthetic 0W-30 motor oil formulated for diesel and gasoline engines and is approved for most Mercedes-Benz, VW, Audi, and Porsche vehicles.
Helps keep diesel particulate filters clean and protects the from ash build-up that can block the exhaust system and lead to reduced engine performance.
Provides superior piston cleanliness (up to 45% cleaner, based on DV4TD vs. ACEA C2/Ce using SAE 0W-30 ).
Provides up to 2.6% better fuel economy (based on ACEA M111 fuel economy results vs. the industry reference oil).

DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems.
PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents.
EFFICIENT FUEL BURN: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation.
EASY TO USE: Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment.

3-in-1 fuel additive keeps new engines clean and improves vehicle's performance.
Improves fuel economy an average of 3.2 percent.
Increases horsepower an average of 2.6 percent.
Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively).

DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems.
PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents.
EFFICIENT FUEL BURN: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation.
EASY TO USE: Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment.

Made from Pennzoil's patented gas-to-liquid PurePlus Technology combined with a high-performance additive system for complete protection.
Full synthetic 5W-30 motor oil tailored to meet the demanding requirements of high-performance engines, including Audi and VW and including Tdi (turbo....
Passes the ACE Fuel Economy MB M111 FE (CEC-L-54-T-96) requirement with a minimum of 2.5% fuel economy improvement (average of three results).
Passes the Peugeot TU3M valve-train scuffing wear test (CEC-L-38-A-94), which includes a limit for cam wear.
Passes the VW Tdi piston cleanliness test (CEC-L-78-T-99) and Peugeot TU5JP-L4 high-temperature deposits test (CEC-L-88-T-02), which includes limits....

CLEANS INJECTORS: The XL Xtreme Lubricant formula helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. It also protects against rust and corrosion..
ENHANCES PERFORMANCE: Opti-Lube’s XL Xtreme Lubrication formula works to improve the performance of truck year round. By increasing the lubrication, keeping things clean, and water under control, XL improves your fuel systems’ efficiency, reliability, and prevents premature wear..
CONTAINS: 4oz bottles of Opti-Lube XL Xtreme Lubrication and a no-spill plastic carry box. Sealed with an O-ring, the Opti-Box allows you to easily transport all eight 4-ounce bottles..

DESIGNED TO EXCEED EXPECTATIONS – Red Line Complete SI-1 Fuel System Cleaner treatment for cleaning & preventing corrosion in fuel systems.
PERFORM & PROTECT – Fuel additive cleans injectors, carburetors, valve & combustion chamber deposits with a powerful concentrated blend of high-temp and low-temp detergents.
EFFICIENT FUEL BURN – Gas treatment that enhances gasoline stability, while reducing the buildup of gum and varnish formation.
EASY TO USE – Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment.
WHY RED LINE – Established in 1979, Red Line Products perform & protect better than any on the market. No compromises.