Extreme conditions in today's engines can quickly break down a motor oil's viscosity. High shear forces can crush lubricating molecules or even break them in half. These damaged molecules cannot thicken properly and may not provide the protection you need.

 

Even under normal driving conditions, engine temperatures can exceed 200°C (300°C for turbos). Exposure to this searing heat can cause build up of sludge, varnish and other corrosive agents. This results in piston deposits, ring sticking, increased oil consumption, loss of engine power and ultimately, costly engine wear.

 

Today's Engines Are More Advanced Than Ever Before.Super lightweight aluminum alloys are used to forge critical components with tolerances of 1/10,000 of an inch. These multi-valve, fuel injected engines deliver more horsepower, accelerate faster, are more fuel efficient and produce fewer emissions than the engines of the 1980's. But there is a price.

 

These Harder Working Engines Can Wreak Havoc On A Motor Oil. The high revving, harder working engines shear oil and operate at extremely high component temperatures, breaking down an oil almost immediately. This can result in damage to critical engine parts that the oil is there to protect. If you think all motor oils are the same, or that the brand you've always used is just fine, you could be shortening the life of the engine.

 

Maximum Protection Against Viscosity Breakdown - Castrol blends the finest base oils with unique shear stability requirements for viscosity improvers. As a result, Castrol GTX exceeds demanding North American and European shear stability requirements for viscosity breakdown protection - a claim many motor oils can't make.

Maximum Protection Against Thermal Breakdown - Castrol GTX is specially formulated with anti-oxidants, dispersants, varnish inhibitors and detergents. Together, these additives provide exceptional thermal stability while controlling engine deposits, so even under the intense heat inside today's harder working engines, Castrol GTX provides unsurpassed protection against thermal breakdown.

Castrol GTX exceeds all car and light truck manufacturers' warranty requirements for the protection of gasoline, diesel and turbo charged engines where API SH is recommended. In fact, no leading motor oil protects your engine better than Castrol GTX.

Preserving The Environment - To reduce waste and conserve valuable resources, Castrol uses recycled materials in its packaging. Please help conserve resources. Return used oil to collection depots.