I read about adding zinc to oil right here on this forum. Without going into details, I ordered through this place (link below). Long story short, either USPS stole or misdelievered my pkg. The seller provided tracking and it was delivered in 3 days. Only kicker, I never got it. Contacted the Post Office etc and I was told it was dropped on my porch. No way that happened because on the day and time of delivery, I passed the postal truck as I was coming home. It did not stop at my house, so I could only believe it was misdelievered. After a week of waiting no one was honest enough to return it. So I let Rob Putman know of my delivery problem. He offered me a big discount and still offered free shpg. So if you consider getting this additive for your motor, buy from this outfit. He answers email promptly and ships fast.
http://zddppluscentral.com/home
