Blue Devil Hydraulic Stop Leak (32 oz) - 6 Pack

Hydraulic leaks from aging seals are common on equipment that sees regular use — log splitters, tractor loaders, mowers, and other hydraulic-powered machines. Blue Devil Hydraulic Stop Leak works by reconditioning the rubber seals themselves rather than plugging the leak with particles.

Each 32 oz bottle contains a plasticizer that absorbs into dried, shrunk, or cracked rubber seals, softening and expanding them back toward their original size and flexibility. One quart treats up to 8 gallons of hydraulic fluid. You pour 1 oz per quart of hydraulic oil into the reservoir, then run the equipment for 1 to 2 hours until the leak stops. Once added, it mixes with the oil and stays in the system without causing harm to the other components.

This 6-pack gives you 192 oz total, which is practical if you maintain multiple machines or want to keep spare bottles on hand for when a seal starts weeping. It works across all hydraulic systems regardless of the fluid type already in use.