Sinclair Power Lube Can, New Old Stock

Sinclair Power Lube Can, New Old Stock  This is a late 1950s-early 1960s unopened can of Sinclair Power Lube, 4 fluid ounces.  No denting and graphics remain as vibrant as if new.  Sinclair Refining Company, this was made to free sluggish valves and rings to increase compression and power.