ZEP - 45
Penetrating Lubricant
Zep 45 Dual Force is a superior dual-action penentrant and lubricant that doesn't compromise one for the other. Our patent-pending formula features the newest in anti-wear and rust preventative technology to create the ultimate multi-purpose lubricant and penetrant with PTFE.
Posted by Unknown
Came across this product while researching ways to loosen stuck fasteners. Tried it on exhaust manifold heat shield and O2 sensor which had never been loosened before (car is 2005). Seemed to work better than other brands of penetrating oil. Used liberally as the oil has little time to work on vertical surfaces. After a few cycles of oil and heat, parts came off without breaking. Definitely stinks less than other brands.