545i oil leaks - does repair last?
#1
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I've been doing a lot of reading about oil leaks on the N62, especially the 4.4L. My situation is that currently the last couple of oil leaks on mine are being repaired. This is good; the mechanic who did the pre-purchase inspection is fixing them for me even though they are a fair bit more extensive than he realised. My goal was always to start with a clean slate so that if it does develop future leaks I am only dealing with one leak at a time.
One thing I read is that the updates to the 4.8 included new gasket designs. So what I am curious about is - once the oil leaks are fixed, do they tend to return again a few years later, or does replacing gaskets tend to solve each leak for the long haul? I think it is pretty extraordinary that any modern engine could develop a reputation for oil leaks.
One thing I read is that the updates to the 4.8 included new gasket designs. So what I am curious about is - once the oil leaks are fixed, do they tend to return again a few years later, or does replacing gaskets tend to solve each leak for the long haul? I think it is pretty extraordinary that any modern engine could develop a reputation for oil leaks.
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Join Date: Feb 2017
Location: Atlanta, GA
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My Ride: 2005 545i
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I've been doing a lot of reading about oil leaks on the N62, especially the 4.4L. My situation is that currently the last couple of oil leaks on mine are being repaired. This is good; the mechanic who did the pre-purchase inspection is fixing them for me even though they are a fair bit more extensive than he realised. My goal was always to start with a clean slate so that if it does develop future leaks I am only dealing with one leak at a time.
One thing I read is that the updates to the 4.8 included new gasket designs. So what I am curious about is - once the oil leaks are fixed, do they tend to return again a few years later, or does replacing gaskets tend to solve each leak for the long haul? I think it is pretty extraordinary that any modern engine could develop a reputation for oil leaks.
One thing I read is that the updates to the 4.8 included new gasket designs. So what I am curious about is - once the oil leaks are fixed, do they tend to return again a few years later, or does replacing gaskets tend to solve each leak for the long haul? I think it is pretty extraordinary that any modern engine could develop a reputation for oil leaks.
.
- Valve Cover Gaskets (bad leak)
- Upper Time Cover Gaskets (bad leak)
- Solenoid Valve O-Rings
- Alternator Bracket Gasket
- Pressure Regulator Valves (not sure this qualifies as a leak but both of these were torn)
- Lower Oil Pan Gasket (bad leak)
- Oil Dipstick Tube Seal
- Upper Oil Pan Gasket
- Oil Pump Gasket
- Vacuum Pump Seals - these didn't hold up so I ended up replacing the entire pump about 2 years ago. Hadn't leaked since.
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