3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

6.7 problems/FEELS SLOW

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Old Oct 4, 2007 | 09:39 AM
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6.7 problems/FEELS SLOW

I got 13,000 miles 95 percent of miles is with 20k pounds. Lately i have been putting LSD fuel in it cause ulsd is hard to find on interstates.

Could I have clogged injectors. I notice now that my truck is starting to feel like a dog, especially when going up hills and my mpg is slightly decreasing. Any help?? Bout to bring to dodge to get fuel pressure test or whateva they do?????

This is an great excuse to purchase my aux tank
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Old Oct 4, 2007 | 01:27 PM
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First peolpe on hear are going to start telling you that you have voided your warrenty for running lsd. (who cares that has nothing to do with this warrenty or not) But that might be the cause. First thing I would do is change out the fuel filter if you havent all ready. When you take it in dont say anything about the lsd. What the dealer dont know wont hurt them. BTW did you put the firestone riderites on if so how easy and how do you like it
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Old Oct 4, 2007 | 01:31 PM
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thatb was the plan!!!! as for the firesones, they dont work with my truck cause it dont sag!! haha, but easy install
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Old Oct 4, 2007 | 01:33 PM
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One of the reasons LSD is not recommended is that it will clog up your DPF and the regen will not be able to clear out the additional ash deposits. This could be the reason for the performance decline.
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Old Oct 4, 2007 | 01:38 PM
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Originally Posted by ccoop769
Lately i have been putting LSD fuel in it cause ulsd is hard to find on interstates.
Hello......
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Old Oct 4, 2007 | 01:48 PM
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Originally Posted by Steven K
Hello......
I run lsd in mine all the time and no problems even with all the mods, but I dont have my dpf on that might be why but doubt. Its all hear say
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Old Oct 4, 2007 | 09:11 PM
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Originally Posted by Steven K
Hello......


LOL To funny
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Old Oct 4, 2007 | 11:10 PM
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LSD? I thought as of Jan 2007 they were no longer allowed to sell it. Only ULSD allowed here in Alaska,I sure hope they sell it in Canada 'cause I'll be picking my 08 in about 10 days and theres alot of miles between Idaho and Alaska...
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Old Oct 4, 2007 | 11:41 PM
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Let me guess in kellogg Idaho and canada is 100% ulsd US is not yet like 80% of all fuel sold is ulsd
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Old Oct 5, 2007 | 07:13 AM
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Originally Posted by alaskanjdeere
LSD? I thought as of Jan 2007 they were no longer allowed to sell it. Only ULSD allowed here in Alaska,I sure hope they sell it in Canada 'cause I'll be picking my 08 in about 10 days and theres alot of miles between Idaho and Alaska...
On the interstates here everywhere, it 10 - 1 for lsd vs ulsd. Im ordering me a ufs 70 gallon transfer flow today!!!!!
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Old Oct 6, 2007 | 12:10 AM
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From: Alaska
Originally Posted by KMKDiesel
Let me guess in kellogg Idaho and canada is 100% ulsd US is not yet like 80% of all fuel sold is ulsd

Thats right, Dealers up here are CRAZY on their prices!!! I'm adding 8K in options and paying for the fuel and trip... still coming out ahead.
Glad to hear Canada is ULSD

Thanks Shawn
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Old Oct 7, 2007 | 12:49 AM
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No one has really answered his ??? Will just the regular low sulfur diesel hurt the 6.7 engines??
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Old Oct 7, 2007 | 07:18 AM
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Cant wait to rip off my exhaust!!!!!!!!!! Mid november for smarty!?!? argggg!!!!!!!! Wonder how quad is coming along these days and if his products will have off road feature too??????? But yeah, will the lsd hurt the 6.7 or just the dpf????? Do you guys think if it is dpf, will it burn out on its own in due time if I keep on putting ULSD in it??? no cat messages. Im going to houston again this monday, hopefully I dont start going backwards on the hills in pensacola florida!!! haha
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Old Oct 7, 2007 | 10:02 AM
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Originally Posted by ccoop769
But yeah, will the lsd hurt the 6.7 or just the dpf?????
It may hurt the DPF, NOx, EGR, turbo, and I heard that it's not good for the injectors. Just an FYI that is why they say in the manual and on the pumps ULSD only for 2007 (and newer)!
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Old Oct 7, 2007 | 10:06 AM
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Originally Posted by kev94mx
No one has really answered his ??? Will just the regular low sulfur diesel hurt the 6.7 engines??
Not the engine but the aftertreatment equipment.

Bob
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