Penray’s crankcase and differential cleaner

Penray Crankcase Differential CleanerPenray’s 7612 Crankcase and Differential Cleaner includes a combination of solvents formulated to dissolve sludge and other deposits and collect moisture so that contaminants can be drained during oil changes before causing damage. Suitable for use with diesel and gasoline engines, the blend also removes harmful deposits from valvetrain components, pistons and piston rings to help promote performance and longevity. It is designed to be compatible with all conventional and synthetic oils and lubricants, as well as gaskets, seals and bearings.


The Business Manual for Owner-Operators
Overdrive editors and ATBS present the industry’s best manual for prospective and committed owner-operators. You’ll find exceptional depth on many issues in the 2022 edition of Partners in Business.
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