Rodney Walker

Engine Oil Expert for Ask the Expert on VehicleServicePros.com.

Technical Director, Safety-Kleen Systems and producer of EcoPower, the eco-friendly engine oil.

Ask the Expert: What is PC-11 and the new API oil category for heavy duty diesel engines?

Ask the Expert: What is PC-11 and the new API oil category for heavy duty diesel engines?

Ask the Expert: What's the proper way to extend oil drain intervals?

Ask the Expert: What's the proper way to extend oil drain intervals?

Ask the Expert: How can I estimate the environmental benefit from using re-refined engine oil?

Ask the Expert: How can I estimate the environmental benefit from using re-refined engine oil?

Ask the Expert: How do I know if re-refined oils are okay to use in my engines?

Ask the Expert: How do I know if re-refined oils are okay to use in my engines?

 

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