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      11-20-2012, 10:03 AM   #15
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F32Fleet's Avatar

Drives: 2015 435i
Join Date: May 2005
Location: Southeastern US

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Originally Posted by CT_335D View Post
How many miles on your 335d?

I was told by the BMW dealership not to add any cetane boost or diesel additive. But I noticed that you do. Does it make a difference? My 335d is still under warranty, will BMW honor the warranty if I start using the additives and cetane boost? Or is it better to wait until the warranty expires and then start using the additives?

Here in Connecticut, our diesel fuel has a cetane rating of 40. Can't find anything betterlike 45 or 50.
By law only the minimum must be posted (40). Seems premium diesel went out of favor in 2003 ish.