Polyester Primers

In the past I have used Featherfill, but they changed the formula back in the late 80's and decided not to tell anyone until many people complained about it.
Needless to say I quit using it.

I currently use PPG Omni LV polyester primer MX245, DTM (Direct To Metal, No etch primer) and I'm very satisfied with the product.

On every car I restore, I use it. Then prime with 2K primer, usually K38.