- Engine / equipment
- OM642 3.0 V6 CDI/BlueTEC (280/300/320/350 CDI, ML, GL, R, Sprinter)
- Period mentioned
- 2005 onwards
- Symptoms
- Oil pooling in the engine's V, burning oil smell, drips under the engine; or a hiss or chirp next to an injector with an exhaust smell.
- Possible cause described
- The oil cooler seals (in the engine's V) degrade. Separately, injector washers leak combustion gas and carbon builds up around the injector.
- Check for the garage
- Visual inspection of the engine's V and the base of the injectors.
- Cost cited in the source
- Oil cooler seals: labour-heavy, approx. €800–1,800 (estimate)A rough figure from the original database, not an up-to-date quote.
Oil cooler and injector leaks
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
Oil cooler seals: labour-heavy, approx. €800–1,800 (estimate)
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
Visual inspection of the engine's V and the base of the injectors.
What are the symptoms?
Oil pooling in the engine's V, burning oil smell, drips under the engine; or a hiss or chirp next to an injector with an exhaust smell.
Which cars and years does it affect?
- Brands
- Mercedes-Benz, Chrysler, Jeep
- Engine / equipment
- OM642 3.0 V6 CDI/BlueTEC (280/300/320/350 CDI, ML, GL, R, Sprinter)
- Period mentioned
- 2005 onwards
Taking it to a garage?
Models with this entry
- Mercedes-Benz Clase C (W203)2000–2007
- Mercedes-Benz Clase C (W204)2007–2014
- Mercedes-Benz Clase E (W211)2002–2009
- Mercedes-Benz Clase E (W212)2009–2016
- Mercedes-Benz Clase E (W213)2016–2023
- Mercedes-Benz CLK (W209)2002–2009
- Mercedes-Benz CLS (C219)2004–2010
- Mercedes-Benz CLS (C218)2011–2018
- Mercedes-Benz Clase S (W221)2005–2013
- Mercedes-Benz Clase S (W222)2013–2020
- Mercedes-Benz GLK (X204)2008–2015
- Mercedes-Benz ML (W164)2005–2011
Other entries for these makes
- Chain, injectors and coolant leaksMercedes-Benz · Jeep
- 7G-Tronic conductor plateMercedes-Benz
- Oil-bath timing belt degradationPeugeot · Citroën · DS
- Turbo oil starvation from injector carbonPeugeot · Citroën · DS
- AdBlue system failure (start countdown)Peugeot · Citroën · DS
- M271 chain and camshaft adjustersMercedes-Benz
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