Any old slippy just won't do... proper white coated people have spent years getting the viscosity of this stuff right and making sure it is attracted to the materials being lubricated so it gets sucked into the tiniest gaps by capillary action.

• Prepare seized fasteners for loosening.

• Clean rust and dust if no degreaser available.

• Buy enough to be generous.

• Buy non-flammable if available.

• Consider freeze sprays instead.

• Always wear eye protection.

• Always wear dermal protection.