Protect your engine and your pocket with HAVOLINE^®

It's common knowledge that, at some point, motor oil must be changed. But many drivers are unaware of what makes oil changes necessary. High operating pressure and temperatures of the engine and contamination by combustion products all degrade motor oil and alter its viscosity. And that's important because oil viscosity can impact your fuel economy.

Today's engines are running hotter than ever. In the complex world of motor oil, heat makes the oil thinner or thicker, depending on the circumstance. Once the viscosity improving additives that allow for multi-grade oil formulations begin to break down, the motor oil is liable to become thinner at high temperature, providing less protection from wear. However, if that same motor oil remains in the engine for an extended period of time, at high temperatures the small, light molecules in conventional oil tend to evaporate, leaving large, heavy molecules behind. This makes the oil thicker and heavier. This viscosity increase contributes to poor circulation drop in oil pressure, wear and emissions, and reduced fuel economy.

Protecting your engine from wear and corrosion helps protect all you have invested in your car. As shown in these charts Havoline test results exceeded industry standards in important aspects of engine protection.

Havoline with the Deposit Shield^™ formulation has been proven to retain its viscosity under harsh operating conditions, which helps protect fuel economy.

Passenger car motor oil is designed to work at 100º C or 212º F inside the engine. To test resistance to viscosity, standard tests showed Havoline with Deposit Shield was 3% better at retaining its viscosity than the qualifying limit for the highest API standard*.