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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 12-20-2004, 10:39 AM   #1 (permalink)
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Hi all,
Im posting this topic on behalf of a friend. He currently owns a 1998 E39 523i. He said during the last month his oil light has been coming on very recently. He said that every month he fills the cars oil to the maximum (im guessing more than a litre) and then in one month its all gone!!!

So we had a look-revved it to the red line mark no blue smoke coming out of the exhaust and i also put a tissue over the exhaust, revved it and there were no soot/black deposits on the tissue. Jacked up the car, no oil puddles under the engine everything looked dry on the bottom of the engine...

So if the engine is not eating the oil, and the oil is not leaking...where the hell is it going????
The car runs fine and the MPG has not really changed either! used used
Any ideas?
Cheers,
PJV
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Old 12-21-2004, 03:50 AM   #2 (permalink)
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According to BMW the maximum permissible oil loss is 0.5L/1000Km. It depends pretty much on driving behaviour.
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Old 12-21-2004, 07:58 AM   #3 (permalink)
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My mate says that the oil started dissapearing recently...hes had the car for some time...
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<div class='quotetop'>QUOTE</div><div class='quotemain'>(From Family Guy) Brian to peter: Well peter you've only got a couple hours left. If your gonna pull a party outta your ass you might wanna stand up!</div>
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Old 12-21-2004, 02:23 PM   #4 (permalink)
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how much oil loss in how many Km (miles).
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Old 12-21-2004, 06:06 PM   #5 (permalink)
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Search for oil in and around the area of spark plugs.
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Old 12-21-2004, 09:46 PM   #6 (permalink)
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Quote:
Originally posted by PJV 528@Dec 20 2004, 10:39 AM
Hi all,
Im posting this topic on behalf of a friend. He currently owns a 1998 E39 523i. He said during the last month his oil light has been coming on very recently. He said that every month he fills the cars oil to the maximum (im guessing more than a litre) and then in one month its all gone!!!

So we had a look-revved it to the red line mark no blue smoke coming out of the exhaust and i also put a tissue over the exhaust, revved it and there were no soot/black deposits on the tissue. Jacked up the car, no oil puddles under the engine everything looked dry on the bottom of the engine...

So if the engine is not eating the oil, and the oil is not leaking...where the hell is it going????
The car runs fine and the MPG has not really changed either! used used
Any ideas?
Cheers,
PJV
[snapback]254743[/snapback]

Check your cooling system for oil, maybe head gasket is leaking.
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Old 12-22-2004, 07:19 AM   #7 (permalink)
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Thanks for the replies guys, i will relay the info to my mate.

grtmoby, My mate does general miles- to get to work, take the kids here and there-nothing harsh like really fast motorway (ok, ok, "highway") miles.

agoff7, If oil was leaking into the cooling system, would the cooling not be effective and the engine overheat?

billB, if oil was in the area of the spark plugs, would they spark properly?

Thanks for the input,
PJV
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<div class='quotetop'>QUOTE</div><div class='quotemain'>(From Family Guy) Brian to peter: Well peter you've only got a couple hours left. If your gonna pull a party outta your ass you might wanna stand up!</div>
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Old 12-22-2004, 07:42 AM   #8 (permalink)
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Quote:
Originally posted by PJV 528@Dec 22 2004, 02:19 PM
Thanks for the replies guys, i will relay the info to my mate.

grtmoby, My mate does general miles- to get to work, take the kids here and there-nothing harsh like really fast motorway (ok, ok, "highway") miles.

agoff7, If oil was leaking into the cooling system, would the cooling not be effective and the engine overheat?

billB, if oil was in the area of the spark plugs, would they spark properly?

Thanks for the input,
PJV
[snapback]256229[/snapback]
In the first scenario: you will see white sludge under the oil filler cap and/or oil floating over coolant in radiater-oil is lighter than water.

for the second scenario: there is a deep groove/hole where the oil tends to accomulates and may/may not interfer with the spark..think deep socket with extentions!
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Old 12-22-2004, 07:45 AM   #9 (permalink)
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Thanks billB, ill get hold of my mate and well have a look!

Thanks again....

PJV
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<div class='quotetop'>QUOTE</div><div class='quotemain'>(From Family Guy) Brian to peter: Well peter you've only got a couple hours left. If your gonna pull a party outta your ass you might wanna stand up!</div>
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Old 12-22-2004, 02:58 PM   #10 (permalink)
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another place to check is the oil filter base where it come into contact with engine block.
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