Re: Diesel Fuel Revisited

Posted by jdemaris on December 11, 2006 at 20:36:57 from (66.218.11.116):

In Reply to: Re: Diesel Fuel Revisited posted by massey333 on December 11, 2006 at 18:30:06:

I heard many of the warnings about the potential problems of low-lube fuel. I also don't doubt that many pumps will have shorter life-spans - but probaly not by much. The Stanadyne pumps have certain wear items that tend to go first, regardless of the fuel used.
Wasn't much different around 1973 with gas engines when unleaded gas came into common use and leaded gas started to get phased out. Dealers were stocking their shelves with lead-additive and there were endless warnings about valve guides, valve faces and seats self-destucting. I was working for Deere - and Deere Co. was recommending fuel addives and hardened valve seats. I still have my 1960 Deere 1010 gas tractor, 1949 Case, 1969 Dodge W200 PowerWagon - and none ever got the updated valve train. I've done a few valve jobs over the years - but they wore no faster with the unleaded.
With rotary pumps - thin fuel has always been a problem- long before the Federal mandates for low-sulfur - escecially in cold regions and in military use. Stanadyne is the only rotary-pump company that offers an "arctic kit" to help cope with it. That being said - you mentioned your Ford IDI 7.3. I've got one also - a 94 IDI 7.3 turbo (last made before Powerstroke) and also an 85 with a 6.9 diesel. The 94 has 341,000 miles and I fixed the injection pump once because it was leaking. The pump has been off the 85 once - before anything went wrong with it - because I wanted to update it with an EID governor retainer. It has 240,000 miles on it. Also, my 87 6.2 diesel Suburban made it to 520,000 miles with one pump rebuild. I never used a lube-additive in any of them - but I do use a lot of kerosene and Power Service Anti-gel in the winter. But - low-sulfur fuel had not be around long.
In reference to the seals Deere was actually having trouble with (not just being warned), I don't know of any here in the Northeast - and I think I would of noticed. I met with Deere engineers once a month and got updated with problems. We did have MANY problems with Stanadyne pumps - but it mostly inferior materials, poor design, and poor quality control - not bad fuel. In fact, we had the same problems back to the early 60s. I kind of wonder what took Stanadyne so long to fix things - but I think I know. Deere's first use of the rotary was in 1960 with the 1010/2010 series. When GM placed a major pump order mid-70s for the Oldsmobile-built 350 diesel - the pumps were routinely self-destructing - and something had to be done. GM was facing a law-suit - and I'm sure GM put pressure on Stanadyne to rectify the situation. Around 1978, all kinds of pump updates started coming out - and most applied to the pumps on the Deere tractors as well. But, the D style pump still wasn't fixed properly until around 1985. Then - 1994 ??? Stanadyne does it again to GM with miserable pump failures with the new electronic pump on the 6.5s. But, that's a different story and has nothing to do with the fuel.
Hey - what kind of fuel mileage does your 7.3 get? My 94, with ex-cab, longbed, 4WD, overdrive-automatic, 7.3 IDI turbo and 4.10 axles get a best of around 14.5 on the flat highway at 65 MPH.

Replies:

• Re: Diesel Fuel Revisited massey333 04:09:45 12/12/06 (0)

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