Personally I think that it is a Bunch of CRAP.
Maybe set up this way to wear the Engine Out Faster...
Earlier this Month, I took mine in and asked Manager if they could adjust the Cold Idle Speed Down. He said sure. They did an Idel Relearn,, but didn't help a bit.
The Younger Guy's don't know any better,, cause they're not used to how the motor's of yesteryear were setup on cold Idle. But I sure do.
I want to go to 10w30,, but am afraid to, because the Thinner 5w30 will flow faster on cold start up,, IMO.
I sure wish I knew how to or take it to someone that knew how to go in and change the PC setting.
About 900 rpm, would be about perfect, IMO.
Reving to 1750 and 2000 rpm's on cold idle,, is just wrong headed for long term durability,, IMO.