My son is a truck driver. During a recent visit he showed me how to upshift my '01 911 without using the clutch. He would get up to normal shift rpms, back off the gas a little, slide the shifter into neutral, then the next higher gear. This worked with no grind, jerk or other obvious problem.
Is this wise? It obviously saves on clutch wear, but I worry about whatever else may be happening in the transmission.
Mike