In reply to haasman, my MPG has gone up somewhat, but not a lot. I DO have a good bit more power than before, of course. Your theory makes as much sense as anything else.
To the request for the repair price: The labor was $207 (about 3 hours) and the injectors were about $31 each (shop price). Of course, the valve seals would have been 300 or so and the valve job would have been 2,000. I'd say I got a pretty good deal if my oil usage stays at zero.
1994 C280, dark green metallic
1991 190E 2.6, Black
(sold to another forum member)
2003 Chevy Tahoe LT, Redfire Metallic
1989 Mustang GT Cobra Convertible