1,6,7,8 - Series and Mini CooperGeneral Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.
Interesting. The PO did not use Full Synth Oil. So the first oil change I did I used Mobile 1.
my 93 740il started leaking a bit. So I tried Castrol GTX Synth Blend, no leaks. I've heard FullSynth on a high mileage engine will cause leaks. I guess it's true.
__________________ Uhhh...if the universe is still expanding, WTF is it expanding into?
Now you've lost me...why ask the question in the 1st place when you know what your car requires ?????, if it has full BM history its always been given the required oil....10w/30 or 10w/40 will be fine, full syn/semi syn or mineral will all be fine....they all mix with one another...
__________________ VELVET BLUE UK INDIVIDUAL , IM THE LAST UNITED WE STAND DIVIDED WE FALL
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!
I've heard conflicting views on switching from organic to partial synth/ full synthetic on high mileage engines.
Some say that it is bad because synthetic oil will slowly remove the organic buildup deposited by organic oil which supposedly helps keep the engine sealed. They say this causes leaks (like you experienced).
Others say it is good because of superior lubrication and operating temperatures, which they say adds HP due to a reduction of friction.
Its hard to tell which is the better option, and reading more conflicting views makes my head spin.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.