Additional Key Additives

Fuel Economy

 ILSAC GF-5* engine oils have been proven to have improved fuel economy over ILSAC GF-4 oils. The new Sequence VID fuel efficiency test developed to evaluate ILSAC GF-5 and API SN Resource Conserving oils uses a modern, high efficiency V-6 engine and a test cycle more relevant to today’s typical driving cycle. The result is that ILSAC GF-5 oils will save consumers millions of gallons of gasoline each year over ILSAC G-4 oils. Lubrizol has incorporated a new friction modifier and optimized our additive formulation to maximize fuel economy while maintaining or improving engine protection across all applicable viscosity grades in ILSAC GF-5 engine oils. Remember to follow your owner’s manual for the proper viscosity grade engine oil for your vehicle. 

* ILSAC GF-5 is equivalent to API SN Resource Conserving in SAE 0W, 5W and 10W mulitgrades.

Seal Protection

ILSAC GF-5 engine oils are formulated to pass industry standardized seals tests to ensure improved engine seal protection. The test incorporates contemporary, more relevant seal materials used in today’s modern engines along with heritage seal material to ensure protection for the heritage vehicle fleet. Seal protection is critical to keeping the engine oil in the engine where it belongs doing its job and off your garage floor and out of the environment. Improved seal performance of your engine oil protects your investment in your vehicle and protects Mother Nature!  


Three essential aspects of engine cleanliness have been improved in ILSAC GF-5; piston deposits, sludge control and turbo/high temperature deposits.

Lubrizol’s balanced bi-metallic detergent and anti-oxidant systems minimize harmful piston deposits that can lead to ring sticking. Ring sticking can result in poor fuel economy, substandard emissions, loss of performance, and reduced engine life. ILSAC GF-5 engine oils provide improved protection for longer engine life. 

Sludge control is essential to keeping your engine clean and running like new. Today’s modern engines have sophisticated mechanical control systems such as cam phasing, cylinder deactivation, and variable valve timing to improve performance, reduce emissions and save fuel. Sludge can block the smooth operation of these devices which could lead to reduced engine life and poor performance. Additionally, sludge build-up can restrict oil passageways in the engine starving critical engine components of lubrication leading to premature engine wear or perhaps catastrophic engine failure. 

Many vehicle manufacturers are using turbo charging to improve fuel economy while maintaining or even improving performance. Turbo chargers are powered by your vehicle exhaust which means they are exposed to very high temperatures. Without properly formulated engine oils such as ILSAC GF-5, this high temperature can lead to coking deposits of charred oil in the turbo. Lubrizol’s detergent and antioxidant system maintains cleanliness of critical turbocharger parts under the most demanding conditions to maintain performance and longer engine life.

Wear Protection

Lubrizol has tested our ILSAC GF-5 engine oil additives in the most demanding real world driving in the heat of the deserts of Arizona and the congestion of Las Vegas. Our million-mile plus field trails clearly shows ILSAC GF-5 products are up to the challenge of providing outstanding protection from engine wear. All current and newly introduced engine technologies were tested including the latest GDI (gasoline direct injection) twin turbo changed engine in the 2010 Ford Flex. ILSAC GF-5 will keep your engine running like new and provide protection from wear no matter if you drive an older car or the latest high tech vehicle.