VW Passat Oil Leaks - VW Passat Burning Oil Smells
Do you have an VW Passat oil leak? Does your VW Passat have a burning oil smell? We've noticed in our own service repair facility that the VW Passat 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 VW Passat 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 VW Passat oil leaks.
The Four Most Common VW Passat Oil Leaks
V6 30 Valve 2.8 Liter Engines
- VW Passat Oil Leaks - Cam Chain Tensioner Gaskets and Seals
- VW Passat Oil Leaks - Valve Cover Gaskets CLICK HERE for our detailed and illustrated page that focuses on these VW valve cover gasket leaks.
- VW Passat Oil Leaks - Camshaft Seals and Plugs
- VW Passat 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 VW Passat Crankcase Breather Hose System page. This page explains how this happens and repair options.
What causes Vw Passat oil leaks?
Many Vw Passats have a rough service history.
Blauparts classifies the term 'rough' to be:
- Irregular oil changes.
- Extreme hot or cold climates.
- Not using the correct motor oil specification.
- Not using the correct oil viscosity.
- Repeated short driving distances where full engine temperatures aren't reached and maintained. Read more about how this affects your engine.
- Excessive low RPM city driving, which produces a great deal of condensation and moisture to form within the engine, causing a build up of motor oil sludge. Read more about how city driving affects your engine.
Many owners have bought their Vw Passat without knowing the oil-change history or the type of driving conditions the vehicle was subjected to. If you own or have recently bought a used Vw Passat with over 100,000 miles and have oil leaks, the crankcase breather system should be treated as suspect and checked. An abundance of resinous accumulation (broken down motor oil) in the valve train area indicates the system already has heavy amounts of oil sludge build up throughout the engine and crankcase breather hoses. This engine buildup is most commonly caused by using the incorrect motor oil specification for your model, or incorrect oil change intervals for the type of driving style. Our detailed and illustrated Vw Passat Crankcase Breather Hose System page explains how this buildup happens and how to fix it.
Years of rough service history, as mentioned above, causes major engine contamination. When the crankcase breather system becomes clogged, the air flow generated within the engine crankcase is restricted and doesn't allow the system to breath properly. Too much pressure built up in the crankcase causes oil to push out and leak from the weakest parts of the engine (front and rear crankshaft oil seals).
Please Note: The information and pictures refers to a Vw Passat equipped with a V6 2.8L engine. However, this information can also be applied to other Vw models and engine configurations. For example many Vw Passat models with 4 cylinder 1.8L turbo, Vw Jetta, Golf, or Beetle models with 4 cylinder 2.0L, or 5 cylinder 2.5L gasoline or diesel engines, have been subjected to rough service history. All Vw Jetta, Golf, and Beetle engines and configurations have crankcase ventilation breather hose systems. If your Vw Jetta, Golf, or Beetle has oil leaks from the front or rear crankshaft seal areas, there is a strong possibility that the vehicle has experienced a rough service life. Technicians should inspect the crankcase breather hose system for restriction caused by a build up of oil varnish and sludge. A previous rough service life doesn't have to mean the end of your car's engine. Take action and immediately start using the recommended Vw oil specification in your car.
To prevent this buildup, Blauparts recommends using Ravenol motor oil in your Vw Passat. Made in Germany, Ravenol is an advanced synthetic motor oil that is specifically engineered to meet Vw Passat oil specifications extending Vw oil change intervals, while fighting against sludge build up in the valve train area. Varnish and sludge build up eventually leads to crankcase breather hose restriction, excessive crankcase pressure, and subsequent Vw Passat oil leaks. Ravenol's unique oil formulation has the ability to substantially reduce internal engine friction, resulting in increased fuel mileage, reduced emissions, and extended engine life at an affordable price.
|Vw Passat Oil Specs||502 00||Ravenol|
|Vw Passat Oil Change Kits|
|What are the different features of Ravenol's VPD, VMO, and HPS Vw oil?|
How to choose the right Vw oil weight or viscosity?
|1998-05 Passat 2.8L 30V||X||VPD 5W-40|
|Passat 30V 5W-30|
Passat 30V 5W-40
#1 VW Passat Oil Leaks, Cam Chain Tensioner Gaskets and Seals
CLICK HERE for our detailed and illustrated page that focuses on VW valve cover gasket leaks. Including replacement VIDEOS
When the VW Passat camshaft adjuster seals and valve cover gaskets leak they typically cause a burning oil smell. The passenger side cam chain tensioner seal is located on the backside of the cylinder head and will drip oil onto the down pipe causing this smell. This VW Passat leak is best seen through the passenger side wheel well as pictured (Image 1). The driver side cam chain tensioner seals will leak down onto the A/C compressor and oil filter area (Image 2).
Other Helpful VW Passat Oil FAQs Topics
- BLAU® VW Oil Change Kits, which match the correct VW oil for your specific model.
- VW Passat Motor Oils
- What are VW oil quality standards and
are they important?
• Can I use non-approved oils that don't
meet VW 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 VW oil weight
to use in your specific model.
• How driving and environment conditions
affect VW oil viscosity.
- Basic overview on how to change your
• How often should I change my VW oil?
• How driving style can affect your VW
oil change intervals.
- 3 reasons why you should always use
synthetic VW motor oils.
• Recommended Ravenol VW oil
specifications and features.
#2 VW Passat Oil Leaks, Valve Cover Gaskets
When the VW Passat valve cover gaskets are leaking you will get a leak along the entire outer edge of the valve cover, which then begins to leak down onto the exhaust manifold. There will also be significant leaking into the spark plug chambers of the cylinder head (Image 3).
When the VW Passat camshaft seals are leaking you'll find oil down the front side of the engine. There is usually an oil trail between the seam of the timing belt backing cover and the cylinder head. This oil trail continues down onto the underside of the oil pan making it easy to determine a leaking passenger side camshaft plug and seals (Image 4). The drivers side camshaft plugs and seals can be much harder to pinpoint. This is because the symptoms are similar to those of leaking cam chain tensioner gaskets. Typically the driver side cam seals leak down onto the A/C compressor and oil filter area, similar to a leaking cam chain tensioner gasket. The best way to diagnose the leak on the driver side cam seal is to laterally look and see if it's leaking.
When the VW Passat front crankshaft seal is leaking you will see a trail of oil down the front and side of the oil pan. This is many times misdiagnosed as a leaking VW Passat oil pan gasket (Image 5). The rear VW Passat crankshaft seal will cause a collection of oil to accumulate and drip from the bottom of the bell housing area (Image 6).
Crankshaft seals are made of very reliable materials and as a rule don't fail. The root cause for their failure is almost always due to a blocked crankcase breather hose system. With a clogged system, crankcase pressure with in the engine is not released. This pressure along with the engine oil is then driven out of the crankcase past these front and rear seals.