How does it work?
White Shepherd Hydraulic Stop Leak is a unique plasticizer for all rubber seals. White Shepherd absorbs into the seal to soften, expand & revitalize the size and flexibility to its original condition.

How much do I use?
Use 1 gallan to treat up to 30 gallons of hydraulic fluid.

How long does the repair take?
Start engine and drive vehicle or equipment to let White Shepherd circulate. The repair is sealed while you drive (up to 2 days drive time).

Do I have to change my oil after I apply White Shepherd?
NO. White Shepherd mixes with the oil and can stay in the system.

How long will the repair last?
White Shepherd is a permanent repair!

Can I reapply White Shepherd?
YES. White Shepherd does not contain petroleum distillates, which can destroy seals after temporarily expanding them. It is safe to repeat treatment if other seals leak in the future.

Can I use this in my brake system?
NO!