I used K+N filters in my previous gasser cars and they did a great number on performance and fuel consumption.
anyone have any experience on a Diesel clunker? Would it make sense to shell out the 40-some bucks to get a re-usable filter? I find mine all the time clogged with oil and toss it for a new Hengst Filter

__________________
"Schwarzbraun ist die Haselnuss":

1979 300D 234.000 Miles "Brownie"
daily driver,
1979 6.9 Sundays to the Tavern
and car shows "Big Brownie"