Re: oil additive

[JOHN ORR]

sorry to ask this, and I know it was just talked about...   I am on my last 
lead
additive, and can no longer find it, anybody know where I can get some, and 
how
much longer is the Rotella going to have all the high zink, and detergent 
additives,
before I have to start to add extra outside additives?
thanks
john orr
67 cutlass supreme 4 spd
tampa