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Topic: Bio-Diesel and an old C8.3 Cummins engine Any Issues ? (Read 474 times) previous topic - next topic

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Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
I read some older posts talking about the use of bio-diesel in older Cummins engines like the C8.3 mechanical.   Brett mentioned in a post from 6-7 years ago that Cummins thought it was fine to run 5 percent bio-diesel (B5), but not 20 perent...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #1
I wouldn't put any in my 8.3. Not good from what I read for older diesels

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #2
I've run B100 in our Detroit, MBZ (450K no repairs, no injectors, etc.) Case tractor, with no problems. Down in the Sacramento Valley, it's B5 or B20. Your older 8.3 has the Bosch P pump just like our MBZ. Lubricity is higher with Bio-Diesel than...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #3
I do add Alliant Ultra guard on every tank to lubricate the Bosch and clean it. My 5.9 Cummins in my pickup likes it as well.

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #4
I've used Power Service Diesel Kleen +Cetane Boost for years in different vehicles, has given me more confidence I'm taking care of my engine.  It is less than $20 to treat 250 gallons at Walmart or truck stops.
https://www.google.c...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #5
Thanks to  this  thread I was motivated to call a local fuel delivery service and to locate a B5 station in my area.  Turns out minimum fuel requirements In Kalifornia are 4.99% bio diesel.  My normal station may have been B20 for the last few...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #6
I've used Power Service Diesel Kleen +Cetane Boost for years in different vehicles, has given me more confidence I'm taking care of my engine.  It is less than $20 to treat 250 gallons at...


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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #7
The Cummins site mentions that the earlier than 07 models fuel systems parts might be damaged  by the B20 bio diesel. 


Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #8
I notice that no one answered Steve's basic question-where can he find B5 fuel?  I haven't find anything from Cummins that recommends any additive that would allow running higher concentrations of bio.

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #9
I am curious now.

Isn't most diesel sold today, #2 diesel, ultra low sulfur such as at TA/Petro & Flyin J ?

And not a bio-diesel so would not be an issue for older Cummins ?

Thanks for any clarification.

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #10
I understand most diesel is at least B5.  Emission areas are B20. 

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #11
In Oregon I do not find B5 diesel.  B10 is scarce as B20 is more common and less money.  I did find all Fred Meyers (owned by Kroger, selling only B10).  I verified that by talking to their purchasing agent on the phone last year.

I did not...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #12
Jack as I understand it it's not the wear it's the ULSD damaging the rubber in the fuel system.  Same idea as all of our coaches fuel lines.  Would be nice if my additive stops the rubber part damage?

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #13
Yup, up to the state statutes= farm lobbyists.

States that grow corn-- expect higher Bio content.

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #14
Doug W. Just ordered the opti-lube xpd. That chart was very helpful. thanks

  • Dub
  • [*][*][*][*][*]
Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #15
I find no additive with claims of off setting possible damage to the rubber lines seals or o orings in our older engines by the use of B20...All the fuel I see in the Loves stops I have been using is B 20.. Going to look for a lower percentage on...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #16
I knew about the B20 damage more than a few years ago but due to personal issues and laziness put it in on the back burner.

Mistake for me and many others here with pre 07 engines.

I may have my shop or someone else pull an injector to test it.  If...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #17
Cummins recommendations are made with the last stop being the legal department. Contact injection pump shops to get the real world information.

Our 300SD starts instantly not two seconds later in freezing weather, runs like new after many hundreds...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #18
An m11 waits until it reads oil pressure then turns on the injection system.  Most engine wear is on startup. I have seen a few Detroit's that have an oil  pressure retention system.  Works on the ignition switch.  So it starts with its oil...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #19
I can only make a recommendation based on my experience. For several years I have fueled my 1995 U320 Cummins M11 with whatever is available at major locations such as Love's with absolutely zero problems. It is almost always some biodiesel...

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  • Dub
  • [*][*][*][*][*]
Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #20
Yes we have to burn whatever is available if we drive.. My 96 8.3 starts on one spin and runs ok, it's the supposedly long term I'll effects on the internal rubber that concerns me.. Seems all we can do present time is burn what is available on...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #21
I may have had bio and didn't know it in the past. Colorado's western slope doesn't have any that I know of in Grandjunction, but I'm going to start paying attention

Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #22
Dub,

Our U300 is 3 years older than yours and our 300SD is 13 years older, both using Biodiesel and both without any internal rubber hose problems. Not many rubber parts in a Bosch P pump either. It's steel sliding against steel on an injection...

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Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #23
All the brands used rubber.  Imagine a gilling commercial "Phantom" bus chassis with all the lines bundled with a rubber lined steel restraining strap attached to a welded onto the frame stub. 

Foretravel and country coach used a "run" under the...

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  • Dub
  • [*][*][*][*][*]
Re: Bio-Diesel and an old C8.3 Cummins engine Any Issues ?
Reply #24
10/4 P... Have to admit I've not found where anyone states they actually experienced any internal effects.. Appears what we are reading is some guy speculating over possibilities.. I'm going to burn what's available and hopefully a lot of it.. We...

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