Cradle - Sub-frame supporting the engine of some vehicles.

Fluid Varnish - Sticky, glue-like substance resulting from breakdown of automatic transmission fluid.

Hybrid - A vehicle using two different methods of propulsion, such as a small gasoline engine and an electric motor with batteries.

Pinion Gear Clearance - Distance between the pinion gear and drive end frame when gear is engaged.

Spongy Brakes - Braking system that is "soft" feeling, usually as a result of air trapped in the hydraulic system.

Stoichiometric Fuel Mixture - A perfect (chemically correct) air-fuel mixture.

Tap - Tool for cutting threads inside a hole.