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Doug Herbert's Premium Engine Oil Treatment
Chet Herbert developed the first roller cam shafts for race cars. Herbert's are always working hard to make things better. They developed this oil treatment for roller cam engines from Street to Race engines. This should be added at every oil change.

• Contains zinc to help increase the life of your race engine.
• Reduces friction and wear
• Restores compression
• Protects, preserves and restores new and old engines
• Will not harm catalytic converters and emissions accessories
• Adds 1000's of miles to life of vehicle
• Can be used to help break in flat tappet cams
• Available Only from Doug Herbert's Performance Center