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Old 11th August 2009, 13:03   #1
ccieurzo
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PSA: Check your oil filler cap gasket

So I foolishly checked my oil and topped off before a long trip. About 2 miles into the drive, I started smelling oil burning. I stopped and found some smoke rising out of the engine compartment and oil sprayed all over the area around the filler cap. The cap was properly seated, but the gasket was no longer keeping the oil in the engine. I tried bending the tabs for a better seal, and that worked a little, but there was still enough leakage to make a mess. I was fortunately able to find an open parts department on Sat and get a replacement cap. Any recommendations for cleaning all of the oil out of the engine compartment? BTW the car has 90k miles on it.
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Old 11th August 2009, 15:12   #2
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Quote:
Originally Posted by ccieurzo View Post
So I foolishly checked my oil and topped off before a long trip. About 2 miles into the drive, I started smelling oil burning. I stopped and found some smoke rising out of the engine compartment and oil sprayed all over the area around the filler cap. The cap was properly seated, but the gasket was no longer keeping the oil in the engine. I tried bending the tabs for a better seal, and that worked a little, but there was still enough leakage to make a mess. I was fortunately able to find an open parts department on Sat and get a replacement cap. Any recommendations for cleaning all of the oil out of the engine compartment? BTW the car has 90k miles on it.
Somone suggested the M3 (E46?) oil cap fits and provides a better seal.

I believe there has been some discussion about cleaning oil. I think one of the products is simple green or similar name.

Regards,
Jerry
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Old 11th August 2009, 16:05   #3
udaideo
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Quote:
Originally Posted by ccieurzo View Post
So I foolishly checked my oil and topped off before a long trip. About 2 miles into the drive, I started smelling oil burning. I stopped and found some smoke rising out of the engine compartment and oil sprayed all over the area around the filler cap. The cap was properly seated, but the gasket was no longer keeping the oil in the engine. I tried bending the tabs for a better seal, and that worked a little, but there was still enough leakage to make a mess. I was fortunately able to find an open parts department on Sat and get a replacement cap. Any recommendations for cleaning all of the oil out of the engine compartment? BTW the car has 90k miles on it.
Hi there,
I had exactly the same problem on my E39 and I bought a new filler cap which solved the issue. My friend who is a BMW senior technician said that it is quite common for the seals in the cap to go.
Many thanks
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Old 11th August 2009, 19:21   #4
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are there any ones w/ more Bling factor?!
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Old 11th August 2009, 20:04   #5
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I don't know your idea of "bling" but Bimmian sells a billet aluminum one here.

I thought about getting one but went with the E46 cap. My original wasn't leaking I just didn't like seeing "Castrol" everytime I opened my hood when I don't even use Castrol. Besides, the E46 cap is a lot cheaper and who can argue with another ///M on the car?

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