Owning a 2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) is a thrilling experience, but oil leaks can turn that joy into frustration. If you’ve noticed oil burning off the exhaust or pooling on your garage floor, you’re not alone. Many BMW owners face this issue, often misdiagnosed as a failing turbo. At Nelson’s Automotive of Pewaukee, our expert technicians use advanced diagnostics to pinpoint the true cause, saving you time and money.
Common Misdiagnosis: Turbo Compressor Seals
Oil leaks in the BMW 335Cic are frequently attributed to turbo failure, leading to costly and unnecessary replacements. However, our team at Nelson’s Automotive discovered a different culprit: a hardened seal between the air intake pipe and the rear turbo. This pipe, running along the rear of the engine, feeds air to the turbo and oil gets mixed in with it via the engines breather system. When the seal fails, the oil that normally collects at this junction, leaks, and creates a mess, often burning off the exhaust or dripping onto surfaces below. In the picture above your looking at the turbo’s compressor housing and intake tube connection. You can see oil forming at that point viewed on our bore scope.
Precision Diagnostics for Accurate Repairs
At Nelson’s Automotive, we don’t rely on guesswork. Our highly skilled technicians use state-of-the-art tools, including bore scopes, to inspect hard-to-reach areas. In the case of the 2010 BMW 335Cic, we cleaned the affected area, test-drove the vehicle, and used a bore scope to confirm the turbos were dry and functioning properly. The real issue? A faulty gasket causing the leak. This precise approach avoided unnecessary turbo replacements, ensuring a cost-effective solution.
Why Choose Nelson’s Automotive of Pewaukee?
Located in Pewaukee, Wisconsin, Nelson’s Automotive is your trusted partner for BMW repairs. Our commitment to excellence includes:
- Expert Technicians: Our team specializes in European vehicles, including BMW’s N54 engine.
- Advanced Diagnostics: We use cutting-edge tools to identify issues accurately.
- Customer-Focused Service: We prioritize transparency and cost-effective solutions.
- Local Expertise: Serving Pewaukee and surrounding areas with unparalleled automotive care.
Schedule Your BMW Oil Leak Repair Today
Don’t let an oil leak compromise your BMW 335Cic’s performance or damage your property. Trust Nelson’s Automotive of Pewaukee to deliver precise diagnostics and expert repairs. Contact us today to schedule an appointment and experience the difference of working with a shop that puts your vehicle first.
Tags
BMW 335Cic oil leak repair, BMW N54 oil leak, Nelson’s Automotive Pewaukee, BMW turbo leak repair, BMW convertible oil leak, Pewaukee auto repair, BMW oil feed pipe repair, BMW gasket leak, European car repair Pewaukee, BMW 335Cic diagnostics, turbo seal repair, Wisconsin BMW repair