Comp Cams Case Of 12oz Camshaft Break-in Lube Engine-/-Pulley-Cover Direct Fit Design - Mounts

Direct Fit Design - Mounts at factory brake light location for plug-and-play installation

Sierra Classic 1968 - 1974 GMC C35/C3500 Pickup Base 1979 - 1986 GMC C3500 High Sierra

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Comp Cams Case Of 12oz Camshaft Break-in Lube Engine-/-Pulley-Cover Direct Fit Design - MountsEngine Break In Oil Additive (12) Bottles Due to government regulations, in recent years oil manufacturers have removed the Zinc and many other additives from their motor oils. Using one of these "off the shelf" brands of oil during the critical break in process can lead to a failure. Thus, COMP Cams Engine Break In Oil and Additive are designed to extend the durability of internal engine components including camshafts, valve train components and all