I use the topsider pictured above for both the diesel and the 300E, plus the 350 Chevy in the boat. The pickup goes all the way down inside the dipstick tube, to the bottom of the pan. Its rather basic. The first time, as a check, I removed the drain plug and got only a few drops after using it. The only problem with the topsider is that the larger tube will collapse and slow the flow. Quick replacement with a vacuum hose solved that. Use it as long as the pickup tube can get to the bottom of the pan (both my Fords will not allow that).

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon