earthworm

If possible, ignore both incentives and use your Credit Union. I learned , a long time ago, that their rates and convenience cannot be beaten.. I always buy used-private-cash, but the downside of this "method" is that wonderful vehicles such as a new Ford Edge are automatically excluded...

It is either air entering the system, due to porous flex hoses (not very likely) or a soft mounting, using thin flexible metal, of the master cylinder. VW had this problem with their type 4 back in the 70s...This entire car was a problem( 4 year production run)... But the Lincoln LS is different than an Edge- the same design, using thin metal, is not likely... Maybe this is a quirky master cylinder design ???