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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 10-07-2010, 10:25 PM
Zuma man Zuma man is offline
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Location: Carpinteria, CA
 
Join Date: Jun 2010
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Mein Auto: X5 35d
What a difference good diesel fuel

Today I filled my new X5 35d with a tank of 76 Union diesel. WOW! This is the first time since I've owned this vehicle I could not tell it was a diesel. It is so much quieter with very little diesel clank. I presume the cetane level was higher than previous fill-ups. I am surprised at how much smoother it runs as well. Who knew?

Zuma Man
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  #2  
Old 10-08-2010, 03:56 AM
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Marlbro Marlbro is offline
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Mein Auto: 2010 X5 3.0d M pack
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  #3  
Old 10-08-2010, 12:55 PM
ard ard is online now
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Location: CA
 
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Mein Auto: '12 X5 35d/E39M5/996TTX50
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Originally Posted by Zuma man View Post
Who knew?
Everyone.

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  #4  
Old 10-08-2010, 02:34 PM
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AzNMpower32 AzNMpower32 is offline
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Mein Auto: X3
Do a search for cetane.

In the German owner's manual, it recommends filling up with diesel with a minimum cetane value of 51, which is also the minimum cetane level legislated in the EU.
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  #5  
Old 10-08-2010, 03:03 PM
BJKBerg BJKBerg is offline
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Location: Metro Atlanta
 
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Mein Auto: 2010 X5d, 2009 128 Conv.
Quote:
Originally Posted by AzNMpower32 View Post
Do a search for cetane.

In the German owner's manual, it recommends filling up with diesel with a minimum cetane value of 51, which is also the minimum cetane level legislated in the EU.
What is the % of Bio Diesel allowed in the German owner's manual? If I remember my last trip to Germany, spring 2009, all diesel was 20% bio diesel but here in the states BMW limits to 5%, Why?????
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2010 X5d Vermillion Red, Sand Beige Nevada, Premium Pkg, Cold Weather, 3rd Row Seat, Tech Pkg, Trailer Hitch, Ipod
2009 128i Crimson Red, Boston Terra Leather, Premium Pkg, Nav, Heated Seats, Ipod
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  #6  
Old 10-08-2010, 05:45 PM
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AzNMpower32 AzNMpower32 is offline
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Originally Posted by BJKBerg View Post
What is the % of Bio Diesel allowed in the German owner's manual? If I remember my last trip to Germany, spring 2009, all diesel was 20% bio diesel but here in the states BMW limits to 5%, Why?????
EU regulations also limit biodiesel to 5% in normal diesel fuel.

The regulation is DIN EN590 if anyone wishes to search.
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  #7  
Old 10-08-2010, 08:25 PM
Penguin Penguin is offline
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Mein Auto: Z4 and X5 Diesel
Quote:
Originally Posted by AzNMpower32 View Post
EU regulations also limit biodiesel to 5% in normal diesel fuel.

The regulation is DIN EN590 if anyone wishes to search.
I believe that has recently been, or will soon be, increased to 7%
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  #8  
Old 10-09-2010, 08:12 AM
UncleJ UncleJ is offline
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Location: Silicon Valley
 
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Mein Auto: '06 X3
According to www.arb.ca.gov under the diesel fuel section they mandate a cetane level of 53 for automotive diesel fuel. This is higher than the cetane level of 48 I thought it was before. In any case unless there was a bad batch in Carpenteria the OP should not really notice any difference between any diesel purchased in CA IMHO.

Last edited by UncleJ; 10-09-2010 at 08:33 AM.
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