BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Do you run a Cetane booster?

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      11-23-2011, 07:11 PM   #23
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Originally Posted by hotrod2448 View Post
These rating are from Canada I believe, if they are the ones from the TDI forums. It varies from market to market.

In my state minimum cetane is 40 and it is not required that the actual rating be posted on pump. I'm sure some are considerably higher than others but, there is no good way of knowing.
How do we find out what our local market stations have? I always fill with Shell, but they too only state the minimum of 40. If BP (Amoco) has 50, I'm switching.
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      11-23-2011, 09:08 PM   #24
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Originally Posted by hotrod2448 View Post
My position at this point is I will run whatever comes out of the pump for the following reasons:
  • It just so happened my first fill up was at a station with crap diesel and the car got quite clattery because of it. I've since tried a few other stations and found the car to be considerably quieter leading me to believe they have better quality fuel. So, I'll stick to stations I know locally and roll the dice when traveling.
  • The car is new and I while I wouldn't mind having a higher cetane rating and pump lube to keep the noise down and be more efficient a lot of these products also have chemicals that swell o-rings and extra detergents that I'm not sure are necessary or even good for the engine.
  • It says right on the filler cap "No additives". So, I'm not going to put them in there and if shit goes south within the next 4 years BMW can deal with it. I'd rather not give them something to point the finger at. I'm not in it for the long haul anyway, I'll have a new one before the warranty expires.
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