I was recently informed by a master mechanic that shifting the automatic transmission starting in 1st gear through 3rd gear was harmful to the transmission if you do this on a regular basis. I have worked on pickups for over a decade and have yet to hear of this. Does anyone know if this is true? If so any links with info as to why?
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I agree with Shep. Not true.
A lot of these ideas go away back in time, and even good mechanics sometimes have mistaken ideas about how some things work.
A pet of mine is the idea that if you remove the thermostat from a car, the engine will not cool as well because the coolant can pass through the radiator so quickly that it doesn't have time to cool down. You even see this posted in some 'informative' sites. (The facts are, of course, that this is bullshit.) There are reasons to keep the thermostat in the system, but this idea is NOT one of them.
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