oil color - BMW Forum

yanivgol · 04-19-2009, 02:04 PM

hi i just change my oil in my wife car (bmw 318i 1998 e36)
and its has very stranged color like gray is it normal????
i use the "liqui moly 10w-40 mos2 leichtlauf"
i add picture to discrive
thanks !

marti5 · 04-19-2009, 02:23 PM

It looks to me as if you have coolant getting into the combustion chamber, which is not to good news, what does the underneath of the oil fill cap look like and take a look in the coolant if they are milky mayo colour, it's either a cracked head or head gasket I'm afraid.

yanivgol · 04-20-2009, 12:35 AM

thanks marti but i am feeling stupide i cheak again the oil that left in the trunk there is at list 1 liter left in the bottle and its camming originale gray its spechil oil with adding inside thise is the first time i am buying thise kind of oil !!!
sorry and thank you very mouch !!!!!

drz · 04-20-2009, 01:04 AM

What kind of special oil is this? Sounds fishy to me

AlpineSixAndSeven · 04-20-2009, 02:02 AM

hmmm.... the oil CAME that way??? I would drain it and replace the filter again.... use a different brand I use Mobil 1 but that is my opinion

marti5 · 04-20-2009, 03:58 AM

Strange oil, get rid of it and use proper oil.

update:

Just found out that its normal oil with an additive put in it to reduce wear to the engine.

Found on the net:

molybdene disulfide

Explanation:

motor wear will be reduced by using oil with the addition of MoS2
resulting in a good flow (of the oil)

yanivgol · 04-20-2009, 05:59 AM

so martin what you soggestion .... should i change the oil i put it 3 days ago or just leav it its o.k????

marti5 · 04-20-2009, 09:12 AM

Keep it in I think it will do some good:

Engine oil additive,MoS2,Super Friction Fighter

AlpineSixAndSeven · 04-20-2009, 06:03 PM

Person ally i would change it... but that is just me

yanivgol · 04-21-2009, 12:03 AM

thanks guys!!!!!
i think i will keep this oil and at the next 10,000km change it to reguler full sintitic.!

witeshark · 04-21-2009, 12:05 AM

Actually, I think you should change it very soon.

David Mc · 04-21-2009, 04:54 AM

I have used Molybdenum Disulfide extensively for years (greases, oils, powders and additives)- it is jet black in colour, not the milky brown colour of your oil. Basically it is an anti-wear additive which is very useful for breaking in new camshafts, plain bearings etc.. Whilst similar in appearance to graphite (only darker in colour), moly is unique in that it will not stick to itself, preventing harmful buildups from occurring (which is why Moly powder is the weapon of choice for lubricating locks and very fine machinery where oily residue only serves to encourage dust and foreign matter to stick to it). I have used at least 6 or 7 moly products during the past 20 years and have NEVER seen a product this colour. I would be changing to a fully synthetic oil fairly quickly unless you are 100% confident in the quality of the product you are using and sure that the container has not been contaminated.

Texbeamer · 04-21-2009, 06:31 PM

looks more like transmission fluid to me

Shadetree · 04-23-2009, 10:27 PM

You should be doing a full oil & filter change with a good synthetic oil. Make sure that your engine is completely flushed of the old oil. The recommended weight for the 318i is 5W40 I believe (don't quote me on that) but 10W40 is good too. You should get a good synthetic, though.
I can't think of a single oil additive that makes your oil look like that. Oil additives look generally like...well...oil. You had an unopened bottle of oil that looks like this? Very odd.