minimum Cetane for your CDI..
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Joined: Jun 2005
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From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
minimum Cetane for your CDI..
I read someplace (but for the life of me, I can't find it now) that MB engines need a minimum of 45 cetane rating to run properly. I also know that most of the Diesel #2 in the US is around 40... anyone know anything about this? I know additives can raise cetane like Redline's 85+, but those aren't even technically "Recommended" by MB.. Also, will the newer ULSD (Low Sulfur) reduce this cetane yet again?
I've been doing a bit of research on this, but most of what I find doesn't address MB specifically and the dealer is absolutely no help.
I've been doing a bit of research on this, but most of what I find doesn't address MB specifically and the dealer is absolutely no help.
Senior Member
Joined: Jun 2004
Posts: 339
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From: Michigan, USA
'05 E320 CDI, '07 VW Touareg V10 TDI, 2007 Porsche GT3
The DC-supplied literature for my CDI stipulates only that fuel must be No. 2D or 1D, which meets ASTM D975. This standard (D975) specifies a cetane rating of 40.
I've totally struck out on getting any information about diesel fuel (cetane number, sulfur content, etc.) sold here in Michigan. Michigan law requires that gasoline octane rating be posted on the pump. This is not the case for diesel fuel, alas.
I've totally struck out on getting any information about diesel fuel (cetane number, sulfur content, etc.) sold here in Michigan. Michigan law requires that gasoline octane rating be posted on the pump. This is not the case for diesel fuel, alas.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2005
Posts: 4,968
Likes: 2
From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Originally Posted by khaug
The DC-supplied literature for my CDI stipulates only that fuel must be No. 2D or 1D, which meets ASTM D975. This standard (D975) specifies a cetane rating of 40.
I've totally struck out on getting any information about diesel fuel (cetane number, sulfur content, etc.) sold here in Michigan. Michigan law requires that gasoline octane rating be posted on the pump. This is not the case for diesel fuel, alas.
I've totally struck out on getting any information about diesel fuel (cetane number, sulfur content, etc.) sold here in Michigan. Michigan law requires that gasoline octane rating be posted on the pump. This is not the case for diesel fuel, alas.
