Posi-traction is GM's name for a limited slip differential and is very common. The wheel with the most traction will turn. A locking differential acts like differential lock on a tractor where power to goes to both wheels equally. Not the same as posi-trac. Many people have confused posi-trac for a locking differential and claimed it was better than Fords limited slip. They are exactly the same thing. I don't know if new trucks come with a locking diff. option? They have traction control but that mostly limits engine RPM's so you don't spin the tires so fast. Steering is affected with a locking differential but a lot of guys with hot rods weld up the diff. gears to make it a full time locking diff. You get tire scuffing on tighter turns. There are some really fancy traction control systems on high end vehicles too.
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Today's Featured Article - Maintaining Rubber Tires - by Staff. The broad use of rubber tires on farm tractors and machinery has resulted in a great saving in both time and operating costs since the time of steel wheels. There are, however, certain basic fundamentals in the care of tires that should be followed carefully if the owner is to derive maximum benefit from his or her investment. First and most important is to maintain proper pressure for the work at hand. Your best guide to proper inflation is the operator's manual or instruction book tha
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