Stop-leak composition for internal combustion engines

A stop-leak composition for the cooling system of an internal combustion engine, consisting essentially of 5 to 30 weight percent of powdered purified cellulose;

• 25 to 60 weight percent of ground nutshells;
• and 30 to 70 weight percent of a ginger rhizome powder.

A stop-leak composition in tablet form for the cooling system of an internal combustion engine, said tablet consisting essentially of a mixture of purified powdered cellulose, ground nutshells, and ginger rhizome powder.

A stop-leak composition for the cooling system of an internal combustion engine, said composition consisting essentially of a powdered mixture of (1) ground nutshells and (2) ginger rhizome powder and/or powdered wood, said mixture being sealed within a water soluble film package.

A stop-leak composition for the cooling system of an internal combustion engine, said composition consisting essentially of (1) from 40 to 95 weight percent of a cellulosic powder consisting essentially of from 25 to 100 weight percent of ground wood or purified cellulose powder, any balance of the powder comprising ginger rhizome powder, and (2) ground nutshells present in an amount of about 5 to 60 weight percent, based on the entire composition.

A stop leak composition for the cooling system of an internal combustion engine which consists essentially of a mixture of ground nutshells and ginger rhizome powder, said mixture capable of passing through a #30 mesh screen but not a #180 mesh screen, said composition being formed into a tablet and containing sufficient purified, powdered cellulose as a binder, to permit the tablet to remain a solid, unitary structure while dry.

The method of stopping a leak in a cooling system using flowing liquid coolant, which comprises:

• placing into said cooling system a powder comprising from 25 to 100 weight percent of ground wood, any balance comprising ginger rhizome powder, said powder being mixed with ground nutshells.

The method of stopping a leak in a cooling system using flowing liquid coolant, which comprises:

• placing into said cooling system a composition which consists essentially of a mixture of ground nutshells and ginger rhizome powder, said mixture capable of passing through a #30 mesh screen but not a #180 mesh screen, said composition being formed into a tablet and containing sufficient purified, powdered cellulose as a binder to permit the tablet to remain a solid, unitary structure while dry.

The method of stopping a leak in a cooling system using flowing liquid coolant which comprises:

• placing into said cooling system a composition consisting essentially of (1) from 40 to 95 weight percent of a cellulosic powder consisting essentially of from 25 to 100 weight percent of ground wood or purified cellulose powder, any balance of the powder comprising ginger rhizome powder, and (2) ground nutshells present in an amount of about 5 to 60 weight percent, based on the entire composition.