Skip Gundlach wrote:
Scotty wrote:
A few of my friends have done this in their trucks for many
years with no apparent problems. 10 gals of motor oil into
200 gal. of diesel. I've always felt the $10 you save wasn't
worth it. Of course, now it's $25.
SBV
The 25-30/whateverbux, while interesting to me, isn't the issue. It's
getting rid of the waste oil. Over in the Seven Seas Cruising
Association forum where I posted the same questing, Rich H, presumed to
be Hampel, previously seen in these parts, said, didactically,
"Simple engineering answer:
expect the lubricating oil (heavy fraction) to not fully ignite in the
combustion chamber, thus vulnerable to form a massive coke deposit
downstream in the exhaust manifold and mixing elbow. You're not burning
Bunker-C /#6 but lightt weight #2 in your engine. If your engine were
set up to burn a heavy oil (which it cant) then adding lubricating
fuels would be OK; otherwise, not. Asphaltic tar will burn too; but,
you wouldnt put 'tar' in the tank either."
Yet, I'm being referred to many sites, including some governmental (see
prior discussion about Algae-X for validation modus [modii?]) position
papers, which say that doing so is the best way to dispose of the
stuff, with no mention of issues in exhaust streams.
OTOH, I have also seen some reference to aggressively mixing the stuff
with fuel before re-insertion into the fuel tank. I'm not at all sure
what that's about, but I also would hazard a guess that oil changes
would happen while not cruising, and my fuel polishing system would do
a very good job of recirculation of stuff which came down the same pipe
as the other polished fuel, and thus mix well...
So, keep the info coming. I'm pretty close to thinking it's a good
idea :{)) but being talked out of it for sound engineering practices
aimed at engine preservation would be OK, too.
L8R
Skip, shoring up sagging soles at the moment
Morgan 461 #2
SV Flying Pig KI4MPC
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"Believe me, my young friend, there is *nothing*-absolutely
nothing-half so much worth doing as simply messing,
messing-about-in-boats; messing about in boats-or *with* boats.
In or out of 'em, it doesn't matter. Nothing seems really to matter,
that's the charm of it.
Whether you get away, or whether you don't; whether you arrive at your
destination or whether you reach somewhere else, or whether you never
get anywhere at all, you're always busy, and you never do anything in
particular; and when you've done it there's always something else to
do, and you can do it if you like, but you'd much better not."
I cannot speak for your engine, but in my Dodge/Cummins truck I have
used 15% used crankcase oil for more than 20,000 miles with no issues. I
only stopped because I began using veggie oil blends.
--
“TAANSTAFL”
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"A prudent man foresees the difficulties ahead and prepares for them;
The simpleton goes blindly on and suffers the consequences." - Proverbs 22:3
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