Originally Posted by Overkill2 (Post 18548566)

I'm happy to hear you've never had a problem. Either have I but if I was that worried about it, I wouldn't drive my truck. I don't drive cross country but have put a decent amount of miles in 2 years and 2 months of ownership, 38,500 miles. So again, I drive it.

Yes, running a higher grade or percentage biodiesel, you don't get the mileage of regular diesel. But adding a little like B5 will aid in improving lubrication in our ULSD. It is used to increase the lube value that traditional diesel had. They have to add lube additives before selling the fuel because the process of removing sulfur removes the lubrication out of the fuel. I'm glad you're so carefree in your attitude on fuel. That's a personal decision. One question for you though, do you ever drain the DFCM to check for water and if so, at what frequency?

About deleting, it's another personal decision. I'd rather run stock but if problems arise, it is a high likelihood that I will. If emissions lasted, had no problems, and the cost of maintenance of it wasn't so high, I'd have no problem staying stock. I have no problem staying stock now because I have no problems. When I say that deleted 6.7s run really well, I'm not saying stock ones don't. I would not delete to become part of the crowd, I would delete to prevent spending thousands on parts that will eventually fail again. I would delete to hopefully gain a little mileage. I would delete to increase the reliability of my engine as this truck is a very long term vehicle for me. I would delete with a 0 hp or modest tow tune with no smoke. That is why I would delete.

Spending a lot of money on a truck where the factory replacement kit for 15 to 16s fuel system is 5k and labor not included, when pumps have failed because of fuel related issues have happened, makes fuel a concern and makes it a concern in general because we all spent a lot of money on our diesel engine option. Just my 2 cents.

I'm 52 so being part of the cool crew is not an option or concern for me. I'm already cool driving a Super Duty with the Scorpion. I do have plans though for a set of Black Rhino wheels and stock size or 18s tires for the summer. But I'd rather spend money on something that will make the engine and parts last longer like a FASS lift pump. But that's just me. There's enough jacked up trucks with offset wheels rolling around my area. That's the beauty of being able to do what you want to your truck and to come here to offer your own personal taste to the melting pot of different tastes. Peace.

Originally Posted by Overkill2 (Post 18548424)

Speakerfritz, I have never seen B5 for sale around my area unless I just haven't run into them at all. Yes, I have heard of the benefits of running some B5 for lubrication. Thanks for the tips.

I also have plans to install a FASS lift pump to feed the DFCM lift pump to "shine" the fuel; to remove the air from the fuel to help longevity with the pump and injectors. I been in contact with them and found out that there is a bypass built in to the pump in case their pump went down. Then the OEM DFCM lift pump can keep flowing fuel to the HPFP. Apparently pickup owners get an average of 2 to 3 mpg with their use. Hell, 1 mpg gain would be great.

Originally Posted by speakerfritz (Post 18549377)

https://biodiesel.org/using-biodiesel/finding-biodiesel/locate-distributors-in-the-us/biodiesel-distributor-listings?ctl00_ContentPlaceHolder2_C002_RadGrid1Ch angePage=17_30

this site has listing for b5, b10, b20

Originally Posted by willydmax (Post 18551631)

No disrespect meant Overkill, but I think you are wasting your money on some clever marketing with putting a Fass on your truck. The stock lift pump and filter system is great on these trucks. I install a lot of lift pumps on Duramax trucks that don't have a factory lift pump and I don't use the Fass system. It's loud and not designed as well as the pump setup that I use from Kennedy Diesel. Just my $.02.

Originally Posted by Overkill2 (Post 18552079)

You've always been a straight shooter and respectful in my eyes, Willy. I respect that so no need to feel bad. I always appreciate different opinions. I'm not saying that the factory lift isn't good. It has most to do with removing the air out of the fuel. I'm not removing the DFCM but feeding it with the Fass. This is about removing the air.

I'd like to hear why you don't like them. I'll check out Kennedy Diesel, thanks.

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in the Duramax application they run so much fuel volume that they run a return line back into the tank and in my opinion that aerates the fuel which is exactly what you don't want on a diesel.

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Originally Posted by willydmax (Post 18553192)

Thanks Overkill! Maybe I'm being hard on them but in the Duramax application they run so much fuel volume that they run a return line back into the tank and in my opinion that aerates the fuel which is exactly what you don't want on a diesel. I like a high quality product as well as the next guy but if there is too much marketing and not enough proof then I get skeptical. I like to be able to honestly recommend a product because I have good proof it's good for the customer and not just for me as the seller.

Originally Posted by speakerfritz (Post 18553281)

Originally Posted by Overkill2 (Post 18553495)

I came across a DMax thread that is about this very issue with Kennedy commenting in it. I'm on my cell now but will post a pic or the link address. I appreciate your input as your the wrench turner with a WHOLE LOT MORE experience in the oil burner world. You brought up some valid points and something I never thought of because of my inexperience with diesels but I'm learning fast. You're never too old to learn something my dad always told me. Good stuff. Thanks.