WordSnoop Posted February 28 Share Posted February 28 I am replacing the engine oil in my E320 CDI equipped with an inline 6-cylinder engine. The ground is level. The dipstick tube is there, however there is no dipstick included. I extracted 6.5 litres of oil using a Pela 6000 vacuum pump, which took a considerable amount of time. Now presented with the following: The oil capacity is 7.3 litres. I use the electronic measurement features on the dashboard. The oil level is 2.4 litres. Quantity of oil needed: 2 litres Neither of these options seem to be practical. I lack an oil dipstick but own a gearbox dipstick. I inserted it and it displays 70mm oil. If both electronic readings are inactive, what volume of oil does a measurement of 70mm on the dipstick represent? If it is 0.8 litres, then it would match the 6.5 litres that were taken. Link to comment Share on other sites More sharing options...
AmericaMonster Posted February 28 Share Posted February 28 The volume in cubic centimetres is calculated by multiplying the length by the breadth by 7cm. Please provide the measurements of the sump at its base. Link to comment Share on other sites More sharing options...
baelicious Posted February 28 Share Posted February 28 Purchase a new dipstick for the car? Link to comment Share on other sites More sharing options...
WordSnoop Posted February 28 Author Share Posted February 28 I believe the sump does not have a consistent depth. Link to comment Share on other sites More sharing options...
AmericaMonster Posted February 28 Share Posted February 28 Determine the length and breadth of the object at its base and 70mm above its base, then calculate the average of the dimensions. Link to comment Share on other sites More sharing options...
Captiva Posted February 28 Share Posted February 28 The optimal approach is to empty the sump via the drain plug, replenish it with the appropriate amount of oil, and then check the oil level on the dipstick to determine the exact level. Link to comment Share on other sites More sharing options...
baelicious Posted February 28 Share Posted February 28 I am still wondering why you don't purchase a proper dipstick 😉 Link to comment Share on other sites More sharing options...
Captiva Posted February 28 Share Posted February 28 As far as I know, there is no certain dipstick designated as "correct." The dipstick does not fully insert and remain in the tube like the om642 one. Therefore, you must determine the entire mark position on your own. Link to comment Share on other sites More sharing options...
WordSnoop Posted February 28 Author Share Posted February 28 Thank you for the responses. Used a vacuum pump in the end. Both dashboard oil gauges seemed to function properly after adding oil, displaying "oil level ok" and "oil level 7.2 litres." Frankly, the practice was intriguing but quite cumbersome. I'll likely have my Indy handle it next time. Link to comment Share on other sites More sharing options...
BizarreBleak Posted February 28 Share Posted February 28 You may purchase the appropriate sensor and choose to keep it installed if desired. The decision by the manufacturer to choose for a sensor instead of a dipstick while still accommodating a tube was illogical. Link to comment Share on other sites More sharing options...
Captiva Posted February 28 Share Posted February 28 I couldn't locate a dipstick of the appropriate length that remains in the vehicle. The current one is too long, but I now know where the full mark is. I agree that the design is quite impractical, particularly as substantial disassembly is required before inserting the dipstick. Link to comment Share on other sites More sharing options...
Anabroo Posted February 28 Share Posted February 28 You may get a dipstick for your CLK from Ebay. The WIS provides details on the specific measurements in millimetres for the high and low marks on the dipstick for your vehicle. Simply indicate the item from eBay appropriately and that will enough. Despite using electronic measurement, I saw that the reading never dropped below 2.4 litres even after all the oil was removed, indicating that it should have shown as empty. Even when overfilled, it never exceeded 6.8 litres. Using a suction pump enabled me to conduct several experiments, leading me to the conclusion that a dipstick is unbeatable. Cannot see why Mercedes believed they had superior knowledge! Link to comment Share on other sites More sharing options...
WordSnoop Posted February 28 Author Share Posted February 28 Yes, using a dipstick is a wonderful idea, but accessing it requires removing half of the engine cover, and it may be unclear which one is the proper dipstick. I concur with the statement on electronic measuring. My fuel gauge showed 2.4 litres when it was believed to be empty. Link to comment Share on other sites More sharing options...
BizarreBleak Posted February 28 Share Posted February 28 Link to comment Share on other sites More sharing options...
RacingNight Posted February 28 Share Posted February 28 Did Mercedes-Benz revert to using the dipstick? My 2013 350 petrol model has one. Link to comment Share on other sites More sharing options...
BizarreBleak Posted February 28 Share Posted February 28 Indeed they did. 🙂 The dealers used a dipstick while maintaining the vehicles that lacked one, believing they could monopolise the service business by removing it. Link to comment Share on other sites More sharing options...
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