Kerosene in diesel hard on engine oil?

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gavinl

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Got a question, we experience an average of 30% kerosene in our diesel/gas. It'll contaminated oil and shortened the oil life in our fleet, thinking of using AMSOIL Syn Blend Diesel or Heavy Duty Diesel oil, cost is a factor so we wonder if AMSOIL's Syn Blend can withstand the contimination of kerosene in the diesel fuel and still last at least 10k miles?

TIA
 
Kerosene in diesel shouldn't cause any contamination being that it is cleaner than diesel fuel. It does burn a bit hotter, but I doubt this would have too much effect on the oil. Many fleets mix kerosene and diesel in the winter to prevent the fuel from gelling.

Kerosene in gas is a whole different story.

Why do you have kerosene in your fuels?
 
quote:
Originally posted by gavinl:
Got a question, we experience an average of 30% kerosene in our diesel/gas. It'll contaminated oil and shortened the oil life in our fleet, thinking of using AMSOIL Syn Blend Diesel or Heavy Duty Diesel oil, cost is a factor so we wonder if AMSOIL's Syn Blend can withstand the contimination of kerosene in the diesel fuel and still last at least 10k miles?

TIA
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I looked in your profile, your occupation is being a amsoil dealer as you state. Not to knock you, but if you are an amsoil dealer, it seems like you should already know the answer to your question.
 
Anybody with a checkbook can be an Amsoil dealer, no knowledge required
cool.gif
 
Come on guys. Did this guy ask for abuse or information? Looking in both of your profiles, I see you are both BITOG users and therefore you should know that this type of thing isn't welcome here.

I will once again answer that kerosene in diesel should have no ill effect on the oil at all. Honestly, with Amsoil's blend 15w-40 being at over $4 per quart, I wouldn't use it regardless. There are other 15w-40s out there that will do just as good, if not better.
 
quote:
Originally posted by medic:
Come on guys. Did this guy ask for abuse or information? Looking in both of your profiles, I see you are both BITOG users and therefore you should know that this type of thing isn't welcome here.

I will once again answer that kerosene in diesel should have no ill effect on the oil at all. Honestly, with Amsoil's blend 15w-40 being at over $4 per quart, I wouldn't use it regardless. There are other 15w-40s out there that will do just as good, if not better.
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Thank you Medic for chiming in. I agree with the others. Kerosene being refined diesel that it is shouldn't have any negative effects on a diesel engine. Now I've learned that running on a diesel on straight kerosene would not be good unless the diesel is modified to do so. I think maybe a UOA is in order?? AR
 
"Now I've learned that running on a diesel on straight kerosene would not be good unless the diesel is modified to do so"

I don't think that is completely correct as the military has been using JP8, JP5 and Jet A1/A since the early 1990s and has had not major problems. Each of these fuels are kerosene based and very similar to straight kerosene. There has been no modification required. The only down side has been that with certain power limited vehicles like bulldozers, tank retrievers, etc., the lower Btu value of kerosene as compared to diesel fuel does impact full power settings somewhat, but not a serious impact. Also fuel consumption does increase about 5-7 %, again because of the lower Btu values. There have been no modifications required, it is a transparent conversion.
 
quote:
Originally posted by medic:
Come on guys. Did this guy ask for abuse or information? Looking in both of your profiles, I see you are both BITOG users and therefore you should know that this type of thing isn't welcome here.

Click to expand...
Who are you referring to as "guys"? And both of WHOSE profiles?

I only see ONE person, after you, who replied to the original question. My reply was to the replier. And BTW I don't see anything abusive about his reply at all...you just been through sensitivity training or something?
tongue.gif


And another BTW- the original question was perhaps poorly phrased and unclear GIGO

cheers.gif
 
If the fuel is getting into the oil, kerosene blend or not, the oil must come out and the cause of the fuel dilution fixed.


Ken
 
All of My Mercedes diesels and the ones I've owned in the past were rated to run on #1 or #2 diesel or any combination. It's my understanding that #1 and kerosene come out of the same tank!

Some kerosene in the fuel is NO cause for concern.

Marshall
 
Keep in mind that the 2nd gen CTD Dodges are not the high pressure common rail systems currently in use and introduced with the '03 model year.

It seems that there have been a few threads on the Dodge boards about newer pumps failing up in Canada due (apparently) to using fuel that has lower lubricity than whats commonly found in the states.

Not being a chemist, I don't think I'd run pure kerosene if #2 is readily available, but wouldn't worry about a low % mix.

I've recently read where the B100 I've been running lately has been laced with kerosene (30% of mix) to winterize it. The only thing that bothers me is paying big bucks for B100 and possibly putting only B70 in the tank.

As far as lube oil goes, it wasn't all that long ago that many guys ran ATF in the fuel to provide additional lube quality. Heck, many still do!
 
I have seen a study done between CAT and a Mining company operating high in the Andes. They ended up with the best power/cost ratio with a 20% kerosene, 80% Diesel. The reduced btu was compensated by increased consumption, but the government subsidizes kerosene and taxes diesel fuel, leaving diesel fuel 50% more expensive. There was no negative from the reduced viscosity in the pumps and injectors. Actual effect on oil was positive. They were able to go 100 hours longer on oil changes (per CAT SOS program) and were able to obtain 24,000 hour rebuild intervals with a Shell CF-4 oil, although they did not publish the oil analysis results.
 
I think this guy is talking about fuel in his oil since he mentions a couple of different oils. If this is the case 30% dilution will give a very low viscosity no matter which oil is used. That much gasoline would pose a significant explosion risk. Anything over 4% fuel in oil is unacceptable and some engine manufacturers allow less.
 
First of all most diesels can handle kerosene, but may indeed suffer from lack of lubricity. There are additives for this, even 2-stroke oil will work, but that is probably a different subject.

As for kerosene in gasoline....even slight amounts will croak the effective anti-knock index. How much percent are you talking about?

I think your main concern is crankcase oil dilution in your diesel engine, no? This shouldn't be a problem just because some kerosene is in your diesel fuel.

As for oil selection, I too think Amsoil HDD FULL syn 15W-40 is a better value than the blend, for just pennies more and will easily do your 10K interval and more. Maybe do a used oil analysis if you are concerned.

Sure, anyone can be an Amsoil dealer, but some knowledge is required to take and pass the T-1 examination and experience is required to know your stuff. Everyone must start somewhere, don't let the potshotters get you down.
patriot.gif
 
Back when I was a young apprentice I was taught that if you had to run Kerosine inplace of diesel that some form of oil had to be added to the fuel. Two cycle oil, motor oil, ester based jet lube etc..... Now I know that my information on this subject must be out of date! I would imagine that an ester based synthetic 2 Cycle oil would offer the best bang for the buck in protecting injector pumps from lubricity issues.

I also understand the the combination of very poor design of standyne pumps injector pump and the JP8 combined to cause a lot of issues on the HMV!

Kerosine is simply diesel fuel that has been super refined to remove almost all of the impuritys found in diesel! Kerosine looks as clear as water when put into a fuel sample cup.
 
Thanks for the constructive replies. If my question was poorly phrased, I apologize. My original question is asking about a 30% ratio of kerosene in diesel fuel that may contaminate the motor oil in diesel engines.

Yes I'm an AMSOIL dealer, I usually service customers with gas motors so diesel isn't part of my specialty and I'm no chemist by a long shot. That's why I come to BITOG Forums!
grin.gif
 
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