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Old 12-17-2016, 11:46 AM
ngoma ngoma is offline
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Join Date: Nov 2009
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I was thinking of ways to explain your possible loss of compression. My question about the oil was because lifespan of these engines is remarkably better with full synthetic oil. I think there was a VW directive at one point to run synthetic.

The air filter question was because running a substandard filter would let more dirt into the engine, excessively wearing away the rings and cylinder walls.

Of course, we would expect these items to negatively affect the compression over time (thousands of miles), not one day to the next.
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