MajorCommonFluid Leaks

BMW 5 Series: N62 V8 Valley Pan Gasket Oil Leak

N62 V8 Valley Pan Gasket Oil Leak is a common fluid leaks fault on the BMW 5 Series on the 2003–2010 cars, and we rate it major. Putting it right costs $2,500 to $6,000 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 58 documented faults on the BMW 5 Series.

Vehicle: BMW 5 Series
Engine: N62
Years: 2003–2010
Fuel: petrol
System: Fluid Leaks

This page covers the BMW 5 Series as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All BMW 5 Series faults58 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Intake manifold yet. We would rather show none than show a picture of a different part.

What goes wrong

The N62 4.4 and 4.8-litre V8 engines have a valley pan — a cast cover spanning the area between the two cylinder banks — that houses VANOS solenoids, oil passages, and vacuum lines. The gasket sealing the valley pan to the block fails and oil accumulates in the valley before seeping externally. Because the leak is hidden beneath the intake manifold it is often invisible during a casual inspection, allowing significant oil loss before discovery. Repair requires removal of the entire intake manifold assembly.

What you would notice

Oil smell from engine bay without a visible external drip
Unexplained gradual oil consumption with no external puddle
Low oil level warning light appearing between services
Oil staining visible on underside of intake manifold on closer inspection

How to check it

Where to look. Valley pan between cylinder banks, beneath intake manifold

Ask the owner how frequently engine oil requires topping up.
Check the underside of the intake manifold for oil residue.
A specialist should perform a targeted valley pan inspection on any N62 V8 over 100,000 km.
Verify oil level at time of inspection.
If a workshop inspection is possible: Remove the engine cover and use a flashlight to inspect the valley between the two cylinder banks for pooled oil.

Parts involved: Intake manifold.

What it costs to put right

$2,500 to $6,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the valley pan gasket been replaced?”
“How often does the engine oil need to be topped up between services?”
“Has any BMW specialist carried out an inspection of the engine valley or intake manifold?”

Now check the BMW 5 Series you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

BMW 5 Series buyer questions

Is n62 v8 valley pan gasket oil leak serious on a BMW 5 Series?

We rate it major and common on the BMW 5 Series. The N62 4.4 and 4.8-litre V8 engines have a valley pan — a cast cover spanning the area between the two cylinder banks — that houses VANOS solenoids, oil passages, and vacuum lines. The gasket sealing the valley pan to the block fails and oil accumulates in the valley before seeping externally. Because the leak is hidden beneath the intake manifold it is often invisible during a casual inspection, allowing significant oil loss before discovery. Repair requires removal of the entire intake manifold assembly.

How much does it cost to fix on a BMW 5 Series?

$2,500 to $6,000 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which BMW 5 Series years are affected?

Our research records this fault on the 2003–2010 BMW 5 Series. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Ask the owner how frequently engine oil requires topping up. Check the underside of the intake manifold for oil residue. A specialist should perform a targeted valley pan inspection on any N62 V8 over 100,000 km. Verify oil level at time of inspection. If a workshop inspection is possible: Remove the engine cover and use a flashlight to inspect the valley between the two cylinder banks for pooled oil. Look here: Valley pan between cylinder banks, beneath intake manifold