I am interested in purchasing and installing a bypass filter on my 1999 E300D.

Where would the best place be to tap into the oil supply? Are there and capped and accessible oil galleries or perhaps a T into a oil pressure switch?

I figure that I will return the oil down the dipstick tube or through the oil filler cap.

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250, Dec 2024 145,000 miles