Diesel fuel additives

Originally Posted by gulfcoastbeemer

Everyone of my diesel vehicles has regularly exceeded the EPA mileage estimates published for them. Darn if I know why. I'm going to attribute it to the power of positive thinking

Or good driving habits.

Originally Posted by gulfcoastbeemer

I'm not a genius with additives, like Clark Griswold or yourself, but empirical data of my own, collected in the form of 10-years of fuel receipts for five different diesel engine vehicles, suggests fuel economy does vary with fuel source / "quality". Everyone of my diesel vehicles has regularly exceeded the EPA mileage estimates published for them. Darn if I know why.

I'm going to attribute it to the power of positive thinking -- we know it can't be a fuel additive.

I agree, but without additives. The same car as you too - a Mercedes E320 CDI that exceeded the EPA estimates. I would get 43 mpg at 65 mph on flat land for a car rated at 37 highway in the more optimistic era before they made the "correction" on the newer models.

PL

I always wondered if our vehicle programming could take advantage of higher Cetane fuel (~50 ish)

Sent from my MB525 using Bimmer App

Originally Posted by BMWTurboDzl

I always wondered if our vehicle programming could take advantage of higher Cetane fuel (~50 ish)

Sent from my MB525 using Bimmer App

I know it is supposed to change for lower cetane. I remember reading about it within the BMW provided information back when I was researching fuels and cetane. That was 3ish years ago so I do not remember where I read that but I do know it was from BMW.

Originally Posted by Pierre Louis

I agree, but without additives. The same car as you too - a Mercedes E320 CDI that exceeded the EPA estimates. I would get 43 mpg at 65 mph on flat land for a car rated at 37 highway in the more optimistic era before they made the "correction" on the newer models.

PL

Pierre, does the attached photo look familiar?

That photo of the MPG display was taken during a trip last summer in my '06 M-B E320 CDI. See, I am an over-achiever.

Originally Posted by gulfcoastbeemer

Pierre, does the attached photo look familiar?

That photo of the MPG display was taken during a trip last summer in my '06 M-B E320 CDI. See, I am an over-achiever.

Whoa, that is good! May be that cetane improver working!?!

PL

Originally Posted by Pierre Louis

Whoa, that is good! May be that cetane improver working!?!

PL

Stanadyne Performance Formula 4 oz / 15 gal. -- that or, I was driving downhill for the last 135 miles.

Originally Posted by gulfcoastbeemer

Stanadyne Performance Formula 4 oz / 15 gal. -- that or, I was driving downhill for the last 135 miles.

Stanadyne may be one of the few good additives, but you may have had a tail wind!

PL