Just wondering, what's the average price for a Mann filter? And is it M-B's OEM? Where can they be found?

I typically get my filters from the dealer (Ford in my case; I use PSD filters on my IDI's, and they're about $12 apiece) and use Delo 15W-40.

__________________
2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999