Both of the sealed beam Sylvania Silverstar bulbs failed within 5 months of installing them in my 190D.

Regular halogen bulbs (on sale for $6 each) have been in for over a year now and still work fine. :yup:

__________________
1986 190D, 2.5L, 5-speed swap, 180,000 Miles (60K by me).
Jeep CJ-7 with Cummins 4BT/NV4500/AtlastII 4.3.
Grand Wagoneer 4BT project in progress!