Use of sealants and threadlockers

Silicone gasket-forming sealants AS201, AS202 and AS205 are used to seal the valve cover, engine sump, water pump, thermostat, intake manifold, gearbox sump, and the differential and transfer case housings. More about the use of silicone gasket-forming sealants can be read here.

The removable threadlocker AS301 is used in threaded joints that are expected to be dismantled frequently with hand tools: cylinder head bolts, engine sump and gearbox pan gasket bolts, intake manifold and valve cover gasket bolts and others.

The permanent threadlocker AS302 is used in threaded joints that are not expected to be dismantled frequently: cylinder head and wheel studs (but not bolts!), flywheel mounting bolts, torque converter bolts, U-bolts in leaf-spring suspension. A threaded joint assembled with a permanent threadlocker can be dismantled if it is first heated to a temperature of 150°C. More about threadlockers can be read here.

Copper grease A9622 and aluminium lubricant A9623 are used to make it possible to separate parts, in other words, they prevent parts from seizing to one another. Both are able to work at very high temperatures, so they can be used in the hottest places. In particular, copper or aluminium lubricant is recommended for application to exhaust manifold studs, exhaust system fasteners, and also to wheel bolts, hub flanges and the backs of brake pads. More about copper and aluminium lubricants can be read here and here.