Molyslip Copaslip is the perfect choice for heavy duty industrial, automotive and marine applications. Use it on spark plug threads and cylinder head bolts, behind disc brake pads to prevent squeal, for slack adjusters and pivot points and throughout the exhaust system.
I recommend this product for high torque fasteners. I use it on diesel head bolts,rod bolts and main bearing bolts.I read reviews of racing cars use on head bolts and was sold on it. Has met my expectations as a marine engine builder. On my second jar now. Excellent product.