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dan(at)rvproject.com
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 Posted: Tue Aug 01, 2006 10:28 am Post subject: Copper in Oil, XP-360 |
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What does your engine builder say about it?
FWIW, my copper did go down a bit over time but has had some variation:
http://rvimg.com/images/2006/20060703_oil_analysis.jpg
(NOTE: I switched from hobbs to tach hours on the 3rd analysis)
)_( Dan
RV-7 N714D (1021 hours)
http://www.rvproject.com
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Steve Glasgow
Joined: 10 Jan 2006
Posts: 674
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| Posted: Tue Aug 01, 2006 10:45 am Post subject: Re: Copper in Oil, XP-360 |
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Thanks Dan,
I'm still waithing to hear back from Superior and Bart.
Cappy
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Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG |
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sportav8r(at)aol.com
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| Posted: Tue Aug 01, 2006 11:21 am Post subject: Copper in Oil, XP-360 |
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Cappy, I believe there's a fair amount of copper in Aeroshell 15W-50 itself, due to the antiwear additive it contains, but I'm at work and my oil analysis reports are at home... I would offer a comparison with my results if I could.
-Stormy
do not archive
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sportav8r(at)aol.com
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| Posted: Tue Aug 01, 2006 11:28 am Post subject: Copper in Oil, XP-360 |
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My goof... it's not copper _in_ the oil as manufactured, it's apparently a leaching phenomenon from TCP:
http://www.prime-mover.org/Engines/GArticles/Copper.html
Google "copper aeroshell oil 15w-50" to learn more than you ever wanted to know about this, and some urban myths besides 
-Stormy
you do realize you've given me something new to worry about, don't you, Cappy ?!
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Steve Glasgow
Joined: 10 Jan 2006
Posts: 674
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| Posted: Tue Aug 01, 2006 11:41 am Post subject: Re: Copper in Oil, XP-360 |
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Thanks Stormy,
That was a great article on Aeroshell 15/50. To bad they changed the formula. OH well!
Cappy
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Steve Glasgow-Cappy
Cappy's Toy
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lifeofreiley2003(at)yahoo
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| Posted: Tue Aug 01, 2006 12:46 pm Post subject: Copper in Oil, XP-360 |
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You would think the company doing your analysis would
know about Aeroshell formulas and be up to date on any
changes the may have made...? Or am I wrong?
Darrell
do not archive
--- Steve Glasgow <willfly(at)carolina.rr.com> wrote:
| Quote: |
<willfly(at)carolina.rr.com>
Thanks Stormy,
That was a great article on Aeroshell 15/50. To bad
they changed the formula. OH well!
Cappy
--------
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=51579#51579
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Vanremog(at)aol.com
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| Posted: Tue Aug 01, 2006 8:20 pm Post subject: Copper in Oil, XP-360 |
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In a message dated 8/1/2006 10:41:39 A.M. Pacific Daylight Time,0 willfly(at)carolina.rr.com writes:
Recent0 Oil Analyses seem to be showing increased levels of copper coming
from my0 XP-360. The engine has a total of 265 hours and I use Aeroshell0
15/50.[/quote]
============================
It may be that the Triphenyl Phosphate (TPP) in that particular brand0 multi-vis oil is leaching the copper from your bearings as it is suspected0 of doing. Try changing to the better straight weight oils0 without the TPP. If you insist on using a multi-vis oil there are other0 brands without it.0
GV (RV-6A0 N1GV O-360-A1A, C/S, Flying 802hrs, Silicon Valley, CA)0
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sportav8r(at)aol.com
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| Posted: Wed Aug 02, 2006 4:39 am Post subject: Copper in Oil, XP-360 |
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Cappy, my first oil analysis showed copper at 39, then a slow steady drop into the 5-12 range where it has remained for the past 550 hours since break-in. I always use 15W-50 and a 50hr change interval, usually add 1-2 qts in the 50 hr interval.
HTH
-Stormy
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