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What about the old quick test: Remove a valve cover vent tube and when hot and running, put a thumb over the tube and see how long it takes to push your finger off the tube?
The idea being blow-by- the longer is takes the less blow-by and the better the condition of the engine.
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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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