I just had my 85 300d tested. Opacity = 27! They handed me a booklet of diesel technicians who could make my car pass on the next try.

Instead, I went home and ran a can of Diesel Purge through. Went back for the re-test, opacity = 1.

I think that $7 can of Diesel Purge was money well spent. BTW the first re-test is free in WA.

Rob
85 300D 267,000 miles