Lucas Oil Assembly Lube is designed to be used as an initial lubricant to metal. Apply to critical engine surfaces before assembly in order to prevent metal contact upon startup before adequate lubrication is supplied. Lucas Oil Assembly Lube will mix with any oil and will not plug filters. This product clings to all surfaces and is an excellent rust inhibitor, allowing long-term storage for all parts. It provides superior protection against metal transfer during the break-in and running of a new or re-built engine. Lucas Assembly Lube is useful wherever tension or torque is applied. Use only in small adequate amounts. Lucas Oil Assembly Lube Performance Advantages: Perfect for engine building or any assembly; contains Zinc, moly and other extreme pressure additives for maximum protection during engine break in; provides outstanding rust/corrosion protection; also great for long-term storage. Use to pre-lube bearings, cams, lifters valve train; prevents seizing, galling and scuffing; super slick and tacky providing excellent film strength; compatible with conventional mineral and synthetic oils; high temperature service capability. Available in 4 oz. and 8 oz.