Do you have an Audi A4 oil leak? Does your Audi A4 have a burning oil smell? We've noticed in our own service repair facility that the Audi A4 V6 30 valve 2.8 liter engines can develop oil leaks as the car gets older and advanced in miles. This page endeavors to simplify the difficult task of diagnosing Audi A4 oil leaks, especially on these engines. If you are getting ready to spend money on the repairs associated with having different seals, gaskets, and hoses replaced, please read this page addressing Audi A4 oil leaks.
The Four Most Common Audi A4 Oil Leaks
V6 30 Valve 2.8 Liter Engines
- Audi A4 Oil Leaks - Cam Chain Tensioner Gaskets and Seals
- Audi A4 Oil Leaks - Valve Cover Gaskets CLICK HERE for our detailed and illustrated page that focuses on these Audi valve cover gasket leaks.
- Audi A4 Oil Leaks - Camshaft Seals and Plugs
- Audi A4 Oil Leaks - Front and Rear Crankshaft Seals
If your vehicle has in excess of 100,000 miles on it, the oil leaks may be linked to a blocked crankcase breather hose system. CLICK HERE, for our detailed and illustrated Audi A4 Crankcase Breather Hose System page. This page explains how this happens and repair options.
What causes Audi A4 oil leaks?
Many Audi A4's have a rough service history. We consider 'rough' to be irregular oil changes, extreme hot or cold climates, a lot of short driving where full engine temperature is never reached, and excessive low RPM city driving. This produces a great deal of condensation and moisture to form within the engine, causing a build up of sludge. Many owners have bought an Audi A4 without knowing the oil change and driving history. If you own or have bought an Audi A4 with over a 100,000 miles that has oil leaks, the crankcase breather system should be treated as suspect. If you remove the valve cover and see a lot of resinous accumulation in the valve train area, this indicates that the vehicle already has heavy amounts of oil sludge build up throughout the engine. Suspect number one is the Audi A4 crankcase breather system. CLICK HERE, for our detailed and illustrated Audi A4 Crankcase Breather Hose System page. It explains how this buildup happens and how to fix it.
Years of rough service history as mentioned above, cause contamination to take place inside the engine which clogs the Audi A4 crankcase breather hose system. Due to this blockage, the air flow generated within the engine crankcase is restricted and will not allow the system to breath properly. When the engine is running, pressure builds up in the crankcase and causes oil to push out and leak from the weakest parts of the engine.
Other Helpful Audi A4 Oil FAQs Topics
BLAU® Audi Oil Change Kits, which match the correct Audi oil for your specific model.
- Audi A4 Motor Oils
What are Audi oil quality standards and
are they important?
• Can I use non-approved oils that don't
meet Audi oil quality standards?
VW 500 00 [ Superseded to newer
VW 502 00 oil specification ]
- VW 501 01 [ Superseded to newer
VW 502 00 oil specification ]
- VW 502 00
How to determine what Audi oil weight
to use in your specific model.
• How driving and environment conditions
affect Audi oil viscosity.
Basic overview on how to change your
• How often should I change my Audi oil?
• How driving style can affect your Audi
oil change intervals.
3 reasons why you should always use
synthetic Audi motor oils.
• Recommended Ravenol Audi oil
specifications and features.