I bought some of the Gray Primer. Martin Senour brand #7285 and used it this week on my Oldsmobile. I am very Impressed with the results. As follows Quick drying, Easy sanding, Great coverage, and a Larger Quantity. I had to Order mine, but it only took a few hours to get it. I imagine they would carry it in the store if I asked.
Thanks James for the Tip on this.