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Strange goop in the overflow bottle

 
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larry(at)macsmachine.com
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PostPosted: Sun Nov 02, 2008 4:15 pm    Post subject: Strange goop in the overflow bottle Reply with quote

Hi Guys,

This week begins the Annual Inspection of my 601HDS and one of the first
things was a coolant leak that dripped ever so slightly from the coolant
overflow bottle. Large filler hoses were moved out of the way. I tried
to siphon the last half-inch of coolant, but goop on the bottom
prevented it. The coolant bottle was removed and the last half-pint of
coolant was poured into another bottle. The bottom goop was very
different from the clean and transparent coolant. It was gray-black and
didn’t act or feel like oil. After flushing the goop out of the bottle
in two level chunks, I put the goop on paper and it dried to a
gray-black cake. Rubbed between the fingers, it felt like an extremely
fine compound. The bottle was refilled and set on a shelf to check it
again for leakage. There was a leak spot on the back firewall side where
the bottle contacts a rivet head. I've another bottle to install but was
very curious about the accumulated 1/8-inch of goop on the bottom of the
coolant bottle. Any ideas of what it might be? I've never encountered
this before. It's not oil, nor does it leave a carbon trace on the
fingers. It washes off like regular soil. Volume was 1/8 x 2 x 3 lg. The
coolant bottle has never been changed or cleaned, but my coolant has
been changed twice at 60 hours. Any ideas?

Thank you for your response,

Larry McFarland 601HDS at www.macsmachine.com


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gkrysztopik(at)satx.rr.co
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PostPosted: Sun Nov 02, 2008 5:10 pm    Post subject: Strange goop in the overflow bottle Reply with quote

no idea Larry. maybe kick it over to flysoob for more feedback. I have
some floaties in my overflow bottle so maybe I'll clean it out and take
a closer look. It looks pretty cruddy but I was never concerned about
it. There's no goopy stuff, just light floating debris.

on another note, I finally found my oil leak and it was coming from the
main crank seal that I replaced about 20 hours ago. I left it out about
1/8" to move the seal away from the worn grove and maybe there wasn't
enough seal area around the edges. It was leaking from the outside at
the bottom. I got a new seal and one of those stainless steel speedy
sleeves so I'll see how that works out. It installed fine and looks
good so far (two runups with no prop).

gary

LarryMcFarland wrote:
Quote:

<larry(at)macsmachine.com>

Hi Guys,

This week begins the Annual Inspection of my 601HDS and one of the
first things was a coolant leak that dripped ever so slightly from the
coolant overflow bottle. Large filler hoses were moved out of the way.
I tried to siphon the last half-inch of coolant, but goop on the
bottom prevented it. The coolant bottle was removed and the last
half-pint of coolant was poured into another bottle. The bottom goop
was very different from the clean and transparent coolant. It was
gray-black and didn’t act or feel like oil. After flushing the goop
out of the bottle in two level chunks, I put the goop on paper and it
dried to a gray-black cake. Rubbed between the fingers, it felt like
an extremely fine compound. The bottle was refilled and set on a shelf
to check it again for leakage. There was a leak spot on the back
firewall side where the bottle contacts a rivet head. I've another
bottle to install but was very curious about the accumulated 1/8-inch
of goop on the bottom of the coolant bottle. Any ideas of what it
might be? I've never encountered this before. It's not oil, nor does
it leave a carbon trace on the fingers. It washes off like regular
soil. Volume was 1/8 x 2 x 3 lg. The coolant bottle has never been
changed or cleaned, but my coolant has been changed twice at 60 hours.
Any ideas?

Thank you for your response,

Larry McFarland 601HDS at www.macsmachine.com


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bryanmmartin



Joined: 10 Jan 2006
Posts: 1018

PostPosted: Sun Nov 02, 2008 5:19 pm    Post subject: Strange goop in the overflow bottle Reply with quote

I found a similar substance in my coolant bottle a couple of years
ago. Are you using the pink Dexcool fluid? I was at the time but have
switched to regular yellow Prestone fluid. I heard that there was some
problem with the newer Dexcool stuff, but I don't know how true it is.
It is apparently true that the two types are not compatible and mixing
them shortens the life of the anti-corrosion additives. I wonder if
the original engine had been running with conventional antifreeze and
my using the Dexcool without flushing out the old stuff led to the
sediment somehow. I haven't noticed any residue since changing to the
conventional fluid.

On Nov 2, 2008, at 7:14 PM, LarryMcFarland wrote:

Quote:

>

Hi Guys,

This week begins the Annual Inspection of my 601HDS and one of the
first things was a coolant leak that dripped ever so slightly from
the coolant overflow bottle. Large filler hoses were moved out of
the way. I tried to siphon the last half-inch of coolant, but goop
on the bottom prevented it. The coolant bottle was removed and the
last half-pint of coolant was poured into another bottle. The bottom
goop was very different from the clean and transparent coolant. It
was gray-black and didn’t act or feel like oil. After flushing the
goop out of the bottle in two level chunks, I put the goop on paper
and it dried to a gray-black cake. Rubbed between the fingers, it
felt like an extremely fine compound. The bottle was refilled and
set on a shelf to check it again for leakage. There was a leak spot
on the back firewall side where the bottle contacts a rivet head.
I've another bottle to install but was very curious about the
accumulated 1/8-inch of goop on the bottom of the coolant bottle.
Any ideas of what it might be? I've never encountered this before.
It's not oil, nor does it leave a carbon trace on the fingers. It
washes off like regular soil. Volume was 1/8 x 2 x 3 lg. The coolant
bottle has never been changed or cleaned, but my coolant has been
changed twice at 60 hours. Any ideas?

Thank you for your response,

--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.


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_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.
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