[GeorgeWashingtonsGhost]

Nothing will age an engine faster than running your A/C all the time (other than no oil in engine). Always start with A/C off until engine warms up.

[Nik Naym]

“Nothing will age an engine faster than running your A/C all the time (other than no oil in engine).”

Nonsense.

[ivan65]

My 1998 Chevy Silverado has the AC constantly on in the summer, Georgia, 200,000 miles and no problems. Where do you get your information?

[Kirkwood]

ROFLOL! What baloney!

[IYAS9YAS]

Nothing will age an engine faster than running your A/C all the time (other than no oil in engine). Always start with A/C off until engine warms up.

You know many newer cars run the A/C compressor when you turn the defroster on. It does two things. It dries the air and it helps to keep the A/C compressor lubricated in the winter, when you're not using it to cool the car. I have two cars over 100,000 miles. Neither of them suffer from running the A/C at start-up.

[nascarnation]

Nothing will age an engine faster than running your A/C all the time

So the 100 million cars running around like that in the US will die a premature death? Really??

[steve86]

A/C off until engine warms up.

Unnecessary. But waiting to hit the button for 20-30 seconds as the oil pressure builds is always a good idea, as is not racing the engine during the same interval.