Was this good thing or bad thing?

yeah...the high zinc phosphate oils are a must have with todays hydrallic flat tappet cams. the problem is that many of todays oils dont have that. i use shell rotella 15w-40 heavy duty oil in my 318 duster and 340 formula S cuda. it has plenty of zinc and it keeps good oil pressure and i have had no problems with it. your motor is fine. go drive her like you stole her, just take care of her.