...as presented in a recent Bosch workshop held in Sacramento Ca... Note that *80%* of California diesel fuels sampled fell OUTSIDE the recommended levels of proper lubricity for Bosch injector pumps!

This is a PDF file... Page 15 deals specifically with the VP-44 - but it's ALL excellent stuff!

http://www.arb.ca.gov/cbg/meeting/2003/022003bosch.pdf

Good reading for anyone SERIOUSLY interested in their VP-44 injector pumps - and my reason for posting in THIS group...

(EDIT)

Moderator - thanks for moving this to the proper forum - nice to get exposure in BOTH groups, since it does apply - but THIS is where I had meant it to go.) ;D

 

[quote author=DF5152 link=board=4;threadid=15373;start=0#144486 date=1054475810]<br>without having to read through evrything do they recomend an addative?<br>[/quote]<br><br>You hafta read between the lines and use common sense with some of this stuff - neither Bosch OR Cummins are likely to ever recommend a fuel additive, since they would have NO control over what owners might use or HOW they would use it - it's a liability issue they simply WON'T touch, even though they obviously are WELL aware of the problem!<br><br>Every injector pump shop owner/worker I have talked to directly, or read posts of on boards like this one, are not quite as strictly bound by legalities, and INVARIABLY, *they* will STRONGLy recommend use of a major brand additive such as Stanadyne or Power Service to avoid well known pump failures due to poor diesel fuel lubricity - they WILL shy away from recommending other types of additives, such as automatic tranny fluids and such - stick with the stuff MADE SPECIFICALLY for added diesel fuel lubricity, and you won't go wrong! ;D ;D

 

&quot;Does this lack of lubrication go hand and hand with the lift pump problems that seems to be so common?&quot;<br><br>Well, as they say, &quot;opinions are like bellybuttons...&quot; ;D<br><br>*I* think lift pumps fail for a variety of reasons, and for those reasons directly affected by lubrication, yeah, better fuel lubricity would undoubtedly help - but for other types of failure, probably not...<br><br>Still, providing better fuel lubricity when even Bosch has claimed it's low on most fuels available today across the US seems a logical place to start...

 

Dunno about the alcohol - might be worth dropping them a message to find out - but then, you'd pretty much need to do that with any brand you pick - I have no particular loyalty to the PS stuff, only that in a past comparative test for lubricity involving a half dozen or so top brands, PS came in second, and was only slightly behind #1, which was Stanadyne - I can get the PS stuff cheaper and easier at the nearby Walmart, so it makes sense to me...

 

Gary, do you have a cite on that lubricity test? I'd like to take a look at it. Been using Shell Rotella DFA, but if it's worthwhile to change. . . . <br><br>Been trying to find such lubricity tests on the web, but most of the manufacturers don't seem to have specific lube characteristics listed.

 

Sorry - it's been several years since I read that comparison - and that was a major reason I settled on the PS stuff, plus the ease of local purchase. I'll do a search to see if I can find that, or hopefully, and even later product comparison to post or provide pointers to.

AND, I suppose I'm blind, but *I* didn't see ANY comparison of fuel additives on the site pointed to up above - they seem to be a Stanadyne dealer, and may have good prices, but no comparison of effectiveness between various competitors *I* could see...

 

[quote author=TXRAM2 link=board=4;threadid=15373;start=#145274 date=1054662707]<br>ooops sorry guys here's the link to the comparisons<br>http://www.stanadyne.com/dsg/dsg_dfa.asp<br>[/quote]<br><br>YUP - that's the one - if you'll notice the results of the lubricity test portion, the John Deere stuff and Stanadyne essentially tied for best, followed closely by the Power Service stuff - all the rest were quite a bit higher in wear...