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Old 08-07-2012, 03:14 PM   #15
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Originally Posted by RustyJC View Post
While old-timers used to throw all kinds of stuff in diesel fuel tanks (e.g., ATF, used motor oil, etc.), it is definitely NOT RECOMMENDED for today's modern engines.

So where does a 2001 diesel fall; modern or old time?

Paul and Peggy: two old folks;
Holiday Rambler Ambassador, diesel pusher, 2001
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Old 08-07-2012, 03:35 PM   #16
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Originally Posted by 3bells

So where does a 2001 diesel fall; modern or old time?
In the mid to late 90s over the road diesels made the jump to ECM controls and non mechanical injectors. All the Cummins engines identified as IS_ as in ISB, ISC, ISL, ISM are electronic engines as are Cat 3126E and C7, C9 etc. These are all modern diesels. There have been several levels of EPA requirements since ECM controls became standard. The latest 2010 built diesels from Cummins and others require DEF fluid and provide a small separate tank for it. These engines started appearing in motorhomes in 2011.

I don't put anything but #2 diesel or winter blend in cold weather in my ISM. If I park for any length of time I park with a full tank. So far I have only changed fuel filters annually.

Steve Ownby
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2003 Monaco Signature
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Old 08-07-2012, 04:27 PM   #17
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Originally Posted by 3bells View Post
So where does a 2001 diesel fall; modern or old time?
As far as the 5.9/6.7 B-series Cummins is concerned:

Until January 1, 1998, mechanical pumps/injectors were used, the last being the Bosch P7100 pump.

From January 1, 1998 through December 1, 2002, the Bosch VP-44 was used. This was a mechanical plunger pump with integrated electronic controls.

From January 1, 2003 onwards, the engines have been high pressure common rail (HPCR) injected with the rail pressurized by an engine-driven CP3 pump. These are electronic engines in that the injectors are fed from the fuel rail but controlled electronically.

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Old 08-07-2012, 04:54 PM   #18
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Years ago we would use ATF to clean our injectors, they were all the mechanical type. With the new electronic ones it is not a good idea, they run at a higher pressure and the workings don't like the old methods we used to use. In the good old days before EPA reg's we would even recycle our drain oil back into the tank with a machine we got from Cummins. Times have changed and most of it not for the better performance of a diesel. Jim

2002 Newmar Dutch Star DP3569 330 CAT - Toad Jeep Liberty, DW is the Nagivator. Work to travel and everything revolves around the price of diesel.
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