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There is just so much we do not know for sure. We do know that the process of refining ULSD fuel effects the Cetene rating and lowers the lubricity of the diesel fuel. Although it does not make sense that the major brands would not have some control over those levels at least I find that I can not get a definitive answer from the folks that should know.Perhaps in the near future there will be enforceable standards. We have a huge investment in this shinny new diesel truck and as long timers we depend on it. My personal feeling is that the major brands are OK as it is not logical that they would risk damage to your truck and damage to their reputation by not caring and we stay away from the 'No name or generic brands" although they may be a few cents cheaper. However we just can not take the chance so we will spend the money on approved additives that address low cetene and lubricity levels until we know better. Good insurance I guess...
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