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#1
08-08-2007, 05:49 PM
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Quick Oil question, NOT ABOUT BRAND...
I have got a quick question, especially for those of you who live in the warmer climates. I have been running German Castrol 0w30 in my 4.4 since March, which was just after I had my crankcase breather hoses freeze up on me. Great oil for the cold, but if I didn't know any better, in the hot weather we have been having up here lately (30 - 35 C) the oil might just be getting too thin after the big v8 gets up to tempurature. After she gets warm, I get a crazy valve tick, and the oil on the dip stick is really runny. (I actually get the same symptoms on my e46, which I'm looking to rectify as well, if I can use the same summer weight as the e53, the better.) I'm looking for some viscosity suggestions. I think I will switch to the 0w40 German Castrol for the winter months, but I would like to know what you guys down in the hot southern states run during the summer time. The cold weight (0 or 5 w) is a moot point. It's the hot (or up to temp) weight I'm looking for. Would a 40 be enough or should I pop up to a 50? What do you guys think? -J 
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#3
08-08-2007, 09:38 PM
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Well, way don't you just use 5-40 and or 0-40 and pure some BG MOA in the engine? This will help a lot with viscosity and thermal break down. Just my opinion of course.... I just use 5-30 year round, and do in between changes. At the same time, I pour a can of MOA in at every oil change. Something to think about...
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#4
08-08-2007, 10:30 PM
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I live in Houston, Texas, and use Mobil 1 15W-50 the year around (very rarely see 32 degrees F). You only need the low viscosity for start-up in cold weather, otherwise the higher the viscosity the better for engine longevity at the slight cost of a fraction of a gallon of fuel due to the increased fluid friction of the higher viscosity oil.
__________________
A good pessimist is never dissapointed!
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#5
08-09-2007, 10:42 AM
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Quote:
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#6
08-09-2007, 10:55 AM
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Here, check this out: http://cgi.ebay.com/ebaymotors/Qty-2...QQcmdZViewItem
Read the description regarding the Moa addiditive....
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#7
08-09-2007, 10:58 AM
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Quote:
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#8
08-09-2007, 11:03 AM
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Google the company up. BG is the maker. They make great additives and fuel cleaners as well. This is what BMW uses on all there cars to do simple tune ups. Look around and do a search on this site and see what others say about this product. GL
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#9
08-09-2007, 11:42 AM
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Read your hand book page 153, 154, 5-30 and 5-40 are OK.
Years ago i would have agreed to use a addative in the oil but not now with with the new oils on the market. I live in Italy and drive a December 2006 X5 3.0d one of the last E53, before that 2 Range Rovers with BMW motors, a 530d and a RX300 Lexus and used Castrol 0-30 SLX in all, never had a problem at all, winter or summer. I also change my oil and filter every 5000 km. 
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#10
08-09-2007, 06:55 PM
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Quote:
Quote:
If it works for you, great. Just be aware of the risks and liability.
__________________
2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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