Re: OT Vegetable Diesel Opinions

Posted by jdemaris on May 20, 2007 at 18:27:39 from (66.218.18.212):

In Reply to: OT Vegetable Diesel Opinions posted by bm3501466 on May 20, 2007 at 12:08:38:

With waste vegetable oil - there are no controls on content since it's not tested and meant for use as motor fuel. And, from there, no controls on how it is used. Due to that, it's pretty hard to make any blanket statements about it. Bio-fuel that is motor-fuel certified is made from uncooked - i.e. virgin oil from specific sources that HAVE been tested for lubicosity and acid content. There is absolutley no doubt - that many people have ruined - or shortened the lives of their injection pumps using WVO. Also no doubt that some people have done okay. Again, the oils differ, the treatment differs, etc.
And , I suspect that IF a person even shortens the life of a pump from 200,000 miles - to 75,000 miles - it would go unnoticed. Again, I have seen many pumps ruin head & rotors (rotary pumps) with WVO use. In-line pumps handle WVO much better - but there aren't many in the U.S.
So, I guess you have to ask yourself some questions - e.g. - can you do your own pump work? - or do you hire out at $300-$500 per pump? What does the WVO cost you taking into account the time and expense of getting and transporting it, setup expense, etc.
I've got a guy nearby that I've helped out a few times with his Stanadyne rotary pumps. He's ruined three of them in the past 5 years using WVO - but he's doesn't see it as a loss. He buys used pumps in the $50 price range and installs them himself. Now, if he was buying over-the-counter $500 pumps and paying an extra $400 labor for installation - it wouldn't seem to make much sense.
There is lots of hard test data published - from Stanadyne, CAV, the U.S. Military, Cummins, etc. - about wear analysis on injection pumps with various fuel blends. Thing is - I'm not sure what use such data is since it's likely you have no idea what the chemical makeup is in the waste oil you are getting.
I've been using WVO along with waste motor oil for years in several of my diesels - but I don't use a lot and I'm pretty careful. I also do my own pump work.

Replies:

• Re: OT Vegetable Diesel Opinions bm3501466 21:27:28 05/20/07 (1)
  • Here's a few pump numbers jdemaris 06:36:38 05/22/07 (0)
• Re: OT Vegetable Diesel Opinions the Unforgiven 19:32:32 05/20/07 (1)
  • Re: OT Vegetable Diesel Opinions bm3501466 21:25:03 05/20/07 (0)

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