- S -

Snotty

A slippery surface.

Snow-and-mud Tire

A tire, identified with an "MS" suffix, having treads designed to provide traction when driving in mud or snow; available in various ply and belt designs.

SO2

Sulphur dioxide.

Society Of Automobile Engineers (SAE)

A professional organization established in 1905 and now known as the Society of Automotive Engineers.

Society Of Automotive Engineers (SAE)

A professional organization of the automotive industry founded in 1905, the SAE is dedicated to providing technical information and standards to the automotive industry.

Society Of Collision Repair Specialists (SCRS)

A trade association of those involved in the collision-repair industry.

Society Of Independent Gasoline Marketers Of America (SIGMA)

A trade association of wholesale and retail private-brand gasoline marketers.

Sodium Bicarbonate

Baking soda (NaHCO) used to neutralize battery acid.

Sodium Hydroxide

A caustic soda (NaOH) that makes a good parts cleaner when mixed with water.

Sodium Silicate

A white, grey, or colorless compound sometimes used to seal small cracks or leaks in the cooling system.

Sodium-cooled Valve

A partially hollow valve containing metallic sodium that melts at a low temperature (208?F) 97.8?C and when in its liquid state at operating temperatures splashes around inside the valve, transferring heat away from the valve head.

Soft Plug

A term used for core plug.

Soft Solder 95/5

A lead-free metallic alloy of 95% tin (Sn) and 5% antimony (Sb); used to repair or join ferrous metal parts for temperatures below 350?F (176?C).

Soft Top

1. A convertible top. 2. A vehicle having a convertible top.

Software

1. Computer instructions or data. Anything that can be stored electronically is software. 2. The various programs stored in the RAM , ROM, and PROM memories that serves as instructions for the microprocessor.

SOHC

An abbreviation for single overhead camshaft.

Solar Cell

A semiconductor that converts sunlight to electrical energy.

Solar Power

Electricity that is generated by solar cells.

Solder

A filler metal used in joining two or more parts that has a liquid state not exceeding 840?F (450?C).

Soldering

A welding process that produces consolidation of materials by heating them to the proper temperature and using a filler metal having a liquidus not exceeding 840?F (450?C) and below the solidus of the base metals.