I did, yesterday replace a liter of oil with ATF in hopes of getting some deposits out. the sludge wasn't hard packed or anything, just there. Clean up was easy.

The filter was a WIX brand filter. never again. The B/A filter was actually almost 3$ cheaper than the WIX @ $11

Oil this time is a semi synthetic 10W30, next change will be full synthetic.

The damage to the filter looks almost as though it was plugged, and the pump was drawing so hard on it that it collapsed. I'm sure losing any filtering effect.

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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