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X5 E53 (1999 - 2006)
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  #1  
Old 03-17-2009, 10:15 AM
X5 Delight X5 Delight is offline
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Location: Chicago
 
Join Date: Mar 2009
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Mein Auto: X5
Fuel and Oil additives

Anyone using Lucas Oil or fuel additives. I've used fairly regularly and found better millage as well as smoother runs. 85K on the car now. I want to run to 185K
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  #2  
Old 03-19-2009, 10:59 AM
uberpanzer44 uberpanzer44 is offline
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Location: Florida
 
Join Date: Sep 2007
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Mein Auto: X5
I recommend BG 44k for gas tank. Costs about 19-24$ locally. One can makes a difference. Check out web testimonials. Other car makers use it before expensive fuel system procedures
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  #3  
Old 03-20-2009, 07:20 PM
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dcharnet dcharnet is offline
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Location: Iowa
 
Join Date: Feb 2008
Posts: 336
Mein Auto: BMW '12 X5 35i
Additives

I recommend a high quality fuel with additives aleady in the fuel. Not all fuels have this. Google "top tier gasoline" and review the entries there. If you want to use cheaper fuel, then you will need and benefit from fuel additives. As to oil additives, there are many additives on the market and I am not aware of one that is recommended by qualified independent petroleum engineers. Most if not all of these are simply not worth it. Use a top-quality synthetic like Mobil 1, and change it every 7500 miles or so. X5's and all BMW's may also benefit from higher viscosities than BMW recommends. One factor in BMW's recommendation is meeting CAFE standards, and a lighter weight oil helps achieve that, but possibly at some cost to valve train wear, especially in more severe conditions.
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  #4  
Old 03-25-2009, 04:42 PM
uberpanzer44 uberpanzer44 is offline
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make sure oil has BMW-LL specs. Careful also with viscosities
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