Hi All, 2011 Silverado 5.3 gas engine, Chevy dealer somehow filled my crankcase with ATF. The truck was driven about 60 miles before I noticed slightly low oil pressure and checked it. Upon finding it to be Red, and the requisite change of drawers, I had the dealer send a flat-bed, do 2x motor oil change. Now I am wondering what damage was/is being done and what should I do about it? Truck is under warranty until Mid October. People are telling me I should demand an engine, but it seems fine. No Power loss, smoke or oil pressure issues. Motor has 61K on it. I just wish someone could tell me if this will damage the engine. Any help would be appreciated! I have pictures of the clean red oil dipstick and the dirty red transmission dipstick.