Hey guys, two months ago I switched most of my car's 4L60E ATF fluid to Pennzoil Automatic Transmission Fluid, from Walmart's auto section, since I couldn't find anything that was directly labeled "Dexron-iii Fluid" I settled with the yellow bottled Pennzoil Automatic Transmission Fluid, which is worded something around "For use in vehicles previously serviceable by Dexron-iii/Mercon brands". Came here and just found out about the Dexron- III licensing, Dex-VI... no wonder there wasn't any straight Dexron-III fluids in the stores. Should I switch to Dexron-VI now? Transmission is working good still, anyone know anything specific about this Pennzoil oil? Can it mix with Dex-VI? I'm almost sure I'll be alright keeping the Pennzoil.