I tried Lucas before I swapped in my manual. I was having some pretty significant flaring even with no vacuum signal. It didn't really help that much. Flaring lessened maybe a little. It sounds like a miracle in a can will maybe buy you some more time, but that won't last too long.

__________________
For Sale: 1982 MB 300TD
1995 Chevrolet Suburban 6.5TD

Sold: 1980 IH Scout Traveler- Nissan SD33T Diesel