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Learning Center

How Important Is Tire Pressure?

Over inflated and under inflated tires can both cause... Read More

How Do Tires Lose Pressure?

Many factors affect tire pressure... Read More

Quest for the Ideal Coolant Ratio

How much anti-freeze should you have in your cooling system? Read More

What Is the Proper Pressure For My Tires?

Should tires be inflated to the vehicle's specifications or the PSI found on the tire itself? Read More

Bosch Numbering System

Bosch Numbering System Read More

Plug Torque Settings

It is essential to tighten a spark plug to the specified turning angle or torque setting... Read More

What Effect do Fuel Additives and Injector Cleaners Have on Oxygen Sensors?

Will injector cleaners or fuel additives harm oxygen sensors? Read More

How do I Test an Oxygen Sensor?

How do I test an oxygen sensors performance to know if it needs to be replaced? Read More

Why Do Some Bosch Oxygen Sensor Threads Appear "Burnt"?

To ensure quality, Bosch factory tests each oxygen sensor in simulated exhaust gas... Read More

Heat Range Conversion Chart

Heat Range Conversion Chart Read More

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