Nearly forgot, I cleaned the gunk out with a screwdriver !!!! YES it was that solid (anyone ever cleaned out the centifugal oil filter on a Deutz Air cooled Diesel? it was like that) A big bruch of thekind used for Babys bottles, or oilways would be ideal. I soaked it in Parrafin (Kerosene) for 2 hrs first in a big bucket. All this just to tighten up the pipe feeding oil to the turbo. Car goes faster now though!!It WAS worth it.