Originally Posted by senix

Why go to all this extra effort of additives, trying to get the premium stuff and cetance booster if it is so good?

That alone tells me just get the good stuff and stay away from it.

In addition, since at least here in the lower 48 one cannot truely expect it will be the 5% vs some other known percentage I think it best to stay away from it if possible.

Originally Posted by pog23

we were doing head studs. i would do severe duty maintenance regardless of b5 or reg diesel. i work with 4 different gas stations in the lower mainland and talk to diesel customers constantly and have never heard of b5 diesel issues. a customer that drives from bc to alberta and uses b5 diesel in his 6.4 doesnt even remember when the fuel filters were last run and his truck runs strong. now im not saying he wont have potential problems from not servicing his rig im just saying b5 isnt bad. 6.0, 7.3 and older motors have been running fine on b5. its diesel not water. and if it was so bad they wouldnt allow it to be sold to the public who knows nothing about diesels or bio blends because they could be held responsible. maybe ford recommends to do the severe package to get and extra cash grab out of people running b5 or home made blends. or its for emissions junk.. well if you havent deleted the dpf (i know most people here still have the dpf on) your truck is suffocating anyways so if you think b5 is gonna kill your motor, the dpf will beat it to it.

Originally Posted by StanleyZ

It is worth mentioning here that the 6.4L is very different from either the 6.0 or the 7.3. The 6.4L has a DPF. Bio is harmful to a DPF equipped diesel. It enters the engine oil during the exhaust cleaning cycle and dilutes it. It is harder on the engine than regular diesel because a lot of the diesel dilution frfom regular diesel will "boil" out of the oil. The bio will not. As I said above, see the EPA report on the subject posted under my signature on December 13 to 15. It would seem to me that if the DPF has been deleted then the bio would be no harder on the 6.4 than on any other diesel.

Originally Posted by Rudiak

Some states only sell Bio. For example when I was in Illinois I had to use I think it was B15. The guy told me that's all they sell in Illinois. No straight diesel.

Originally Posted by StanleyZ

It is worth mentioning here that the 6.4L is very different from either the 6.0 or the 7.3. The 6.4L has a DPF. Bio is harmful to a DPF equipped diesel. It enters the engine oil during the exhaust cleaning cycle and dilutes it. It is harder on the engine than regular diesel because a lot of the diesel dilution frfom regular diesel will "boil" out of the oil. The bio will not. As I said above, see the EPA report on the subject posted under my signature on December 13 to 15. It would seem to me that if the DPF has been deleted then the bio would be no harder on the 6.4 than on any other diesel.

Originally Posted by slowmans

im also a little confused since bio has less emissions all around, its a cleaner fuel..........it shouldnt really bother the DPF? I know when I used to buy B-100 and mix it in my 6.0 if I spilled it on the cement, it was gone in a few hours unlike diesel fuel.....

Originally Posted by StanleyZ

I'm no chemist but the guys who did the test for the EPA are. I'm just a messenger. They did say in their final conclusion " biodiesel did not cause significant harm to the tested engines even when tested for 200,000 miles, which is twice the expected life of a diesel engine". That may not be a perfect quote but it's pretty darn close. Problem was, as I read the report data it seemed evident to me that it was causing harm. Guess it depends on your definition of harm. And, of course I've never expected any diesel to last only 100,000 miles.

Originally Posted by wp6529

The problem of course is that chemists are not diesel mechanics and don't have a good perspective on what damage is significant, nor the expected life span for a diesel engine.