Have you ever read anything as crazy?

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11,006
Location
Canberra ACT Australia
You can think what you like, I know what I saw. I could actually see the oil leaking out from behind the harmonic resonator after I added mobile one. At the time I thought I was in serious trouble as that wasn't something that could be fixed cheaply. Although I haven't looked, but I believe there is no longer a leak after I topped up several times with castrol. Last top up was about 4 months ago. End of oil consumption suggests that. A taletell sign of a leak is the burning oil smell. I no longer have that. My own theory is that the mobile one oil has the wrong molecule size for BMW engines. It would leak where castrol would not.
 
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16,150
Location
Silicon Valley
 Originally Posted By: sprintman
My own theory is that the mobile one oil has the wrong molecule size for BMW engines. It would leak where castrol would not.
You mean viscosity? I don't think molecule size would do anything at such a macro level. It is very common to see oil leak when you first switch to a particular oil. I've seen that with PP, Synpower, Maxlife, etc. But dino always seems to stop the leak. The solution I think is to replace the gasket if it is easy to reach, or stick to an oil that is thicker (Castrol is usually thicker than M1).
 
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19,528
Location
Lake Forest, CA
When did you change to M1 oil, daytime or nighttime ? M1 is very picky, if you change your oil during the day you'll have a leak. I always change oil at night for M1 and during the day for anything else and I have no leak in all my cars.
 

sprintman

Thread starter
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11,006
Location
Canberra ACT Australia
His user name is GoingNuts, I think it suits his way of thinking. He also thinks BMW are to conservative with 15,000 mile OCI's and tells everybody 30,000 mile OCI's are the go.
 
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