Skip Shifting is Damaging to M/T Synchronizers

The gear ratios in 6-speed manual transmissions are spaced closely so if desired, you can keep the engine speed in its optimum range for maximum power and acceleration.  Shifting to the next higher or lower gear in a close-ratio transmission results in small changes in engine speed.

Shifting a close-ratio transmission through its gears sequentially puts a very small load on the synchronizers since they only have to make small changes to the speed of the mainshaft and the clutch disc.

However, some drivers like to “skip shift” so they don’t have to work the clutch pedal and shift lever as much.  They accelerate in 1st gear, then shift into 3rd gear, then into 5th, or 6th.  Skip shifting is very hard on synchronizers; it puts a higher demand on them than they were designed to take.  Skip shifting can cause premature synchronizer wear that can cause the gears to grind when you shift up or down.

If you are guilty of skip shifting, this is a reminder that skip shifting can be an expensive habit to break.

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