Posted by jdemaris on February 20, 2010 at 17:55:41 from (67.142.130.39):
In Reply to: Re: What about ATF posted by JayinNY on February 20, 2010 at 16:36:33:
People say lots of things and often do so only based on a "hunch" or "heresay" or a good sounding Web posting.
When it comes to injection pumps, even people that work in pump-shops rarely know what causes, or what prevents wear. Some like to pretend to know, but often it's only their guess. I worked in a few shops and have a pretty good idea on how it goes.
The reality is, a mechanical rotary injection pump might last 1,000,000 miles before any major parts wear out, if it's run on good fuel with good lube. So, let's say you do something to cut that life in half. That's then 500,000 miles and the average person would never know the difference.
Add to that the myth of injector pumps being "rebuilt", and many people think that a new life begins once a pump is "rebuilt." It does not. Most pumps sold as "rebuilt" have very few new parts and the main parts have not been renewed in any way. A "rebuilt" pump might have most moving parts with 500,000 miles or 20,000 engine hours on them already. So, lets' say it craps out in 40K miles. How do you know what to blame the failure on?
So, some guy buys a "rebuilt" pump, it craps out in 100K miles, and he blames the fuel. That just adds to the confusion of the average person having no way to know what is going on and what really works. Then have some "professional" pump guy say what the cause was, and things get more convoluted.
For that reason, I try to rely on real metal-wear test specs done in controlled environments when they are availalble. Stanadyne, the U.S. Military, Lucas-CAV, et. al. have done several such tests. With lube additives, various types of vegetable oils, etc.
To be specific about ATF, it does add some lube - but buys very little protection per dollar as compared to other additives. Two-stroke-cycle oil is much more cost-effective.
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