Cummins approves B20 biodiesel fuels
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Cummins ISL engine - growing in popularity among motorhome owners

Cummins approves
B20 Biodiesel Fuels

Picture: "The ISL is one of the fastest-growing engines in popularity among diesel motorhome owners because it delivers outstanding performance."

Cummins has now announced the approval of biodiesel B20 blends for use in its 2002 and later emissions-compliant ISX, ISM, ISL, ISC and ISB engines. This includes the recently released 2007 products.

Cummins is able to upgrade its previous position on the use of biodiesel fuel, which limited the use to B5 blends only, up to B20 for three key reasons:

  1. There are now stability specifications biodiesel fuel 
  2. the availability of quality fuels is growing rapidly, and 
  3. Cummins has completed the necessary testing and evaluations to ensure that customers can reliably operate their equipment with confidence using B20 fuel.

The popularity and use of biodiesel fuel continues to climb. Recent studies predict that, by 2008, 1.2 billion gallons of B100 biodiesel will be produced in the United States. Cummins says that it "will continue its efforts to ensure that future products will be compatible with biodiesel fuels, and will continue to participate in industry efforts aimed at the development of consistent quality throughout the biodiesel industry."

Further information about the use of biodiesel for both on-highway and off-highway Cummins products can be found on the Web at www.everytime.cummins.com.

See the full press release here 

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Readers comments about biodiesel:
Latest shown first 

Jodi :   I agree totally, not soon enough. What brand do you recommend that is the most environmentally friendly? We will be purchasing one and I was looking for the most environmentally friendly manuf. If you know could you email me @ evansenterprize@yahoo.com Thanks

Sue E :   I think we need to pressure congress for biofuel to be a bigger priority and more available at a competitive price. RV manufacturers should be looking at their RVs and presuring engine builders and equipment manufacturers to come up with more fuel efficient systems.

Delta Bunny :   Heres my small amount of knowledge on bio-diesel. Don't use it if you come where the tempertures are low. It will gel more quickly than diesel. Second, there is no real standard on Bio-diesel, so no one really knows what they are getting. In pickup trucks in our area, bio-diesel has caused havoc since it is a high detergent diesel. Expect to have plugged fuel filters if you have never run it before. It could take 2-3 filters if you vehicle has a number of miles. Bacteria really love bio-diesel because of what it is. Possibly may cause problems to injectors and filters. Setting in a meeting with GM folks, they did not oppose the addition of fuel additive. With low sulfur and wax content in the new fuel, seals, injectors and pumps will be more likely to experience wear. Quite honestly, I won't use the Bio-fuel until I have standards and more experience. I have seen too much problem with it if you change from regular diesel and back. The price difference is nothing compared to a tow and new filters. Take this advice for what it is, just advice.

Cosmickt :   It is absolutely immoral that in the year 2007, I cannot go out and buy a relatively inexpensive RV that is fully equipped with solar, be at least biodiesel powered and totally environmentally safe. There is something terribly wrong with a society that cannot bring this about. WHEN is this going to happen?

Rob James :   As I read it both Cat and Cummins say biodiesel will not harm their engines. But Caterpillar also says it neither approves nor disapproves of biodiesel but ANY fuel related problems are not covered under warranty. It's also a question of how much is blended, B2 is only 2% biodiesel and 98% diesel so it doesn't make much difference. Cat gives fuel specifications up to 30% biodiesel. Seems to me that they say it's ok for any of their diesels but if the fuel has any contaminents etc that damage the engine it's not covered.

Ed :   Does anyone know if my 1992 Holiday Rambler Limited 300 HP CAT diesel will run ok on biodiesel

Joe :   Why do we the voting public allow the goverment to keep Bio fuel from the market. If we change all diesels to use Bio fuel. gas would be 30 cent a gal. and the cartel can drown in their oil. Think of it, all Heavy Equipment, all Trucks, RV's, Boats, Buses running on Bio-diesel. Let's all vote.....

Big Joe :   I think the problem is with both the auto makers and our government. We "boomers" have the power (with our numbers) to control both by just voting. I love my diesel and should be paying less than gas but again, our fault (The Vote). We have more power now than any group in history. We can get what we want from cheaper fuel to better social security to anything reasonable or even un reasonable with our numbers. We must all realize just how much power we have. The United States belongs to us. However we do need to be reasonable with this power. All us "boomers" should rememeber the "gas shortage" in the 70's and Washingtons "we will be free of import oil by the 90's" and we should also remember when Washington borrowed our Social Security "stockpile" that they were going to repay......WHEN? Bio Diesel is a good start but we need more and faster. Long live the long running Diesel engines!!!!

sjw :   Diesel costs more than gas. Why - ask the makers why -when it costs less to make by using less energy to make and has more btu power than gas. Diesel engines are now cleaner than ever and use less oil because less contaminants in the combustion process. I think american auto makers are afraid of how long they last. It will only make them look worse because they cannot make a car to last nearly as long as the engine. This would cheat the longevity of the engine being able to last more than twice its life 300,000 plus mile in many cases. Something is wrong with the price fixing not the engines.

Maddy :   There is a place in Ojai CA that converts diesel RV'S to running on left over vegetable oil from deep fryers at MacDonalds etc. I hear they have really good results.

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