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Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 12:52PM

It looks like it’s not the usual suspects.

If I take a city drive under 45mph, I won’t get any splatter, but if I go highway speeds....I’ll end up with 20, 30, 50 spots or more on the rear cargo doors and engine inspection door (outside). Engine has PCV system.
No leaks from:
Shifter seal
Diff/trans Filler or drain plugs or gaskets
Backup switch
Diff o rings
Diff seals
Speedo cable
Main seal weep hole
Valve cover gaskets
Oil pan gasket
Oil switch
Gen adapter gasket
Oil cooler, and seals
Oil pump gaskets, and housing to block gasket
Harmonic seal, not even oil residue in the little pan under the harmonic balancer.

Looked in the heater doors...dry as a bone.

Basically EVERYTHING is dry, no old or new oil leaks anywhere. I rebuilt this engine last year. The only non stockish part in it is an Isky 270 cam. Rockers adjusted static.

No smoke out the tailpipes either....

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Posted by: isucorvair ()
Date: August 07, 2019 01:01PM

Do you put 'armorall' or tire shine on your tires?

Eric P.
DeWitt, IA

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 01:26PM

isucorvair Wrote:
-------------------------------------------------------
> Do you put 'armorall' or tire shine on your tires?
>
> Eric P.
> DeWitt, IA

Nope. Heck, the only part of the van I wash is the rear doors to get the spots off....spinning smiley sticking its tongue out

Rockingham, NC

1962 Greenbrier
65 110 4speed



Edited 1 time(s). Last edit at 08/07/2019 01:27PM by 63vert.

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Re: Oil speckled Greenbrier rear doors
Posted by: jjohnsonjo ()
Date: August 07, 2019 01:28PM

might be condensation in the mufflers.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 01:34PM

jjohnsonjo Wrote:
-------------------------------------------------------
> might be condensation in the mufflers.

Ok, I’ll bite, how does this occur? BTW I have dual Harley exhaust. I’ve poked my fingers in them and they come out black hot smiley. Black and it feels slick like graphite, not wet.

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Posted by: MattNall ()
Date: August 07, 2019 01:36PM

Road draft tube or OCV system?

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Oil speckled Greenbrier rear doors
Posted by: Spectre ()
Date: August 07, 2019 01:38PM

One byproduct of combustion is water. The water, mixed with carbon in the exhaust, could be the source of your spots.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Norman, OK

<a href="[www.wunderground.com] src="[weathersticker.wunderground.com]; alt="Click for Norman, Oklahoma Forecast" height="90" width="160"></a>

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 01:42PM

Spectre Wrote:
-------------------------------------------------------
> One byproduct of combustion is water. The water, mixed with carbon in the exhaust, could be the source of your spots.

Ok, got it. I do run cold plugs...would this make it worse? Main jets are 53’s on 62 carbs.
I live around 700 ft altitude.

Rockingham, NC

1962 Greenbrier
65 110 4speed



Edited 1 time(s). Last edit at 08/07/2019 01:46PM by 63vert.

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Re: Oil speckled Greenbrier rear doors
Posted by: Cheepfk ()
Date: August 07, 2019 01:45PM

Blow-by coming out of the oil fill tube?

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 01:47PM

Cheepfk Wrote:
-------------------------------------------------------
> Blow-by coming out of the oil fill tube?


Nope, no pressure or smoke vapor

Rockingham, NC

1962 Greenbrier
65 110 4speed



Edited 1 time(s). Last edit at 08/07/2019 01:48PM by 63vert.

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 02:37PM

MattNall Wrote:
-------------------------------------------------------
> Road draft tube or OCV system?


Neither.
I have PCV.
GGGGGGG smileys with beer

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Posted by: MattNall ()
Date: August 07, 2019 03:14PM

Good! Now it's a real mystery!

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 03:25PM

Could Spectre be on to something? Am I running rich and getting black spots from soot and water vapor somehow?
What does our hive mind say?

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Date: August 07, 2019 03:59PM

Is your radiator cap tightspinning smiley sticking its tongue out, sorry....

But pulling at straws here, not brake fluid??

Jeff K
64 Fitch Sprint convt
65 Fitch Sprint coupe
64 Greenbrier
70 Camaro ss 396

Just North of Jacksonville, FL.

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Re: Oil speckled Greenbrier rear doors
Posted by: corventure Dave ()
Date: August 07, 2019 04:23PM

You'll get some strange looks, but...
Take a couple of tube sox. The longer the better. Cut the toes out to them. slip them over the Harley exhaust tips and secure them so they won't blow off.
Then go out and drive at the speeds that brings out those spot's. It's gonna look funny!
When you get home, remove the sox and see what's inside. If it's the exhaust moisture and carbon, there should be traces.

Either way, your neighbors will be talking about you for years!tongue sticking out smiley

Corventure Dave

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 04:36PM

corventure Dave Wrote:
-------------------------------------------------------
> You'll get some strange looks, but...
> Take a couple of tube sox. The longer the better. Cut the toes out to them. slip them over the Harley exhaust tips and secure them so they won't blow off.
> Then go out and drive at the speeds that brings out those spot's. It's gonna look funny!
> When you get home, remove the sox and see what's inside. If it's the exhaust moisture and carbon, there should be traces.
>
> Either way, your neighbors will be talking about you for years!tongue sticking out smiley
>
> Corventure Dave

There’s nothing I can do that’ll make my neighbors look at me any differently than they already do.

If I end up with floppy black socks, what would be my remedy?

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Posted by: frankwrow ()
Date: August 07, 2019 07:20PM

I have the exact same problem. Recently I washed my '65 Greenbrier Deluxe and took it out for the day and I noticed the rear doors and bumbers were speckled with a fine mist and it's definitely oil based. If I wipe it with a rag I get a smearing effect and this has happened on a number of occasions. I think the turbulence created by the flat rear end has something to do with sending the exhaust backwards intermittently in eddies which end up depositing exhaust soot on all the rear facing surfaces. This is all very unscientific but based on numerous instances of this repeated experience. I've often wondered if I could deflect the exhaust downward or to the side if this would still occur. I end up bathing the rear of my GB more often than the front end because of this.
-Frank, Chelmsford, MA

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 08:05PM

frankwrow Wrote:
-------------------------------------------------------
> I have the exact same problem. Recently I washed my '65 Greenbrier Deluxe and took it out for the day and I noticed the rear doors and bumbers were speckled with a fine mist and it's definitely oil based.

What style of exhaust do you have? Pic?
Do you know what heat range plug you are running? Regular range for your motor, hotter, colder....

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: Oil speckled Greenbrier rear doors
Posted by: joelsplace ()
Date: August 07, 2019 09:52PM

It is easy to tell the difference between oil spots and soot. If you have that much oil coming out the exhaust your engine is very sick.
My Lakewood quickly gets spotty on the back but it is road dust in my case.

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...

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Re: Oil speckled Greenbrier rear doors
Posted by: 63vert ()
Date: August 07, 2019 10:35PM

joelsplace Wrote:
-------------------------------------------------------
> It is easy to tell the difference between oil spots and soot. If you have that much oil coming out the exhaust your engine is very sick.


The spots seem “oil like”. Compression all the way around is like new. And there is no oil consumption between 3000 mi oil changes.
I’m going to try running a Corventure Dave sprint in some old tube socks and see what happens.

Rockingham, NC

1962 Greenbrier
65 110 4speed

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