Jim,

I am trying to account for the discrepancies between our test results, and subsequent conclusions. The result of my tests, as described in thread No: 71 were significantly different than yours. My vcf behaved exactly as specified by Mercedes for my particular model -'95 E300D.

Do you have the Mercedes' specs for your model? The specs for your model may be different than for my model. Additionally, my vcf was an original Mercedes unit, manufactured for Mercedes by "Behr", Your vcfs are manufactured by "Sachs"

I am not familiar with "Sachs" vcfs. I am assuming however that they are not supplied by Mercedes, but are after-market units. If so, perhaps "Sachs" vcfs don't meet Mercedes' specifications, but "Behr" does

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]