Thread: Positraction
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Old 08-28-2010, 04:59 PM
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Renntag Renntag is offline
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Improper use of factory names.

Shocked to see "Posi Traction" listed in a Mercedes Forum, I decided to read and comment.

This name is the branded LSD of general motors and inaccurately used to describe far too many differentials. ( no disrespect to the OP ).

below info found here:
http://en.wikipedia.org/wiki/Limited_slip_differential

Enjoy.

Can anyone comment on codes/markings on the mercedes diff tags that indicate an LSD?



Quote:
In the 1950s and 1960s many manufacturers began to apply brand names to their LSD units. While Packard pioneered the LSD under the brand name "Twin Traction" in 1956, the most famous of these in the USA was Chevrolet's "Positraction". Since then, Positraction (often shortened to "positrac" or merely "posi") has become a genericized trademark for LSDs in the USA.
Other factory names for LSDs include:
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