Resources

Engineered to go the distance.

Technical Bulletins

Technical Bulletins

Recommended procedures and guides using our Penray line of products

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Winterize Your Vehicle

Winterize Your Vehicle

Since 1951, Penray has been helping vehicle owners and operators run in all weather and climates. We offer recommendations and information for vehicle...

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Cooling System Tech Facts

Cooling System Tech Facts

Coolant systems require proper maintenance and care. Here are some signs to look for and guides for maintaining proper coolant flow for optimal performance.

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Fuel Doctor

Fuel Doctor

Fuel Treatment What are microbial growth or bugs? How do bugs grow? Find out the warning signs and learn about Penray's Fuel Doctor Program can help you...

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