elle88

427 build with few hundred miles

just recently that green stuff... retorqued the intake ( was slightly loose) but the green fluid continues. it's there after few miles engine on, then i clean then after few miles no fluid anymore.

it's slightly oily but doesn't smell like oil , nor like gas and doesn't taste ( not sweet) as coolant.

there's nothing so green in my engine ( the oilis brown , the gas light green, the coolant light blue)

the smell of this fluid is more like plastic thing....

help

MrJlr

Coolant

talltxin

trainor

I agree that it looks like coolant, but I would consider that when the intake was put on that maybe a tacky applicant was put on the gasket and it shows that color. If you didn't put the intake on , maybe talk to the guy that did install it. I could be wrong.

elle88

but it doesn't taste sweet as coolant .
and there's no evident leak close to front engine water passage at manifold.possibly just back
how can the fluid gets to the middle of intake manifold from front or back water passages?

MrJlr

Rule #1.......never taste the fluids seeping from your engine....!

Apocolips

Could it be some kind of gasket sealant gone bad or maybe thread anti-seize that didn’t set up.

SanDiegoPaul

I think it is some type of assembly fluid. There is no coolant in the intake where you're showing the green.

MrJlr

Or the coolant is seeping from the water jackets in the head and past the gasket...it REALLY looks like the tell-tale coolant seepage...

HamadUP

The coolant fluid is HIGHLY toxic! .. don't try to taste it even in small quantities.

Fonz69

I would ask the guy that rebuilt your motor

SteveG75

Looks like some kind of gasket coating. Wrong color for coolant.

SanDiegoPaul

Exactly. That's another reason that I posted what I did, that it's some kind of assembly fluid. The color is not coolant; the color actually looks more like tarnish discoloration or something similar.

OTOH, I have no idea what type of assembly fluid it could/would be, since it's green.

calif phil

I think it might be Loctite. I know there is a green version.

SteveG75

Yeah, it does kind of look like that color. Not sure why someone would use Loctite as a sealer on the intake bolts. I like the Permatex non-hardening sealer myself. Works great.

MrJlr

LOL !

elle88

I was thinking to sealant-gasket discoloration too. that's propably why it smells like plastic or so.
before retightening the intake bolts there was one day a little lake of that green stuff...

i don't know if useful to contact the engine builder after 1 year. i don't think he will completely remember the job done.

here is the full report

http://forums.corvetteforum.com/c3-t...-thread-3.html

unfortunately 63mako is not on the forum too since a while...

trainor

I think I would ask the builder, chances are he uses the same products time and again. If all else fails, clean it with a small brush and see if it re appears. Good Luck

TheSkunkWorks

I stopped doing taste tests a while ago, but suspect seepage is some sort of assembly potion.


Felice Anno Nuovo!

68/70Vette

Ethylene glycol (green stuff) is very toxic. However, to place a drop on you finger, and then taste with your tongue is not a problem. I've done that before. After tasting the drop, just spit it out. A tiny drop of ethylene glycol, if you swallow it, will destroy cells in your liver. Fortunately, your liver can regenerate lost cells and there's no harm. In large quantities, ethylene glycol will destroy too much of you liver to recover from. If your child or dog drinks ethylene glycol (it has a nice sweet taste) take them to the emergency clinic, but if you have vodka, whisky, etc, try to get the child, dog to swallow it. Ethanol is an anti-dote to ethylene glycol poisoning. Just as a safety measure if you have ethylene glycol in your garage or a concerned you might spill it, keep a bottle of vodka or whisky in you garage. Actually, if concerned you can drink the ethanol before you might be exposed to ethylene glycol. Hey...it's 5:00 o'clock somewhere all the time.
............

as for the green stuff that didn't taste sweet. I think you'll just to have to wait this one out to see what's going on. Beautiful looking engine. Probably a lot of us wish we had this kind of a problem!!!!

My 68 Corvette and my 1997 Ford Thunderbird (DD) have 100% ethylene glycol in their cooling system. No water. With no water, the cooling systems are never pressurized. My 1968 Corvette has not had any water in the cooling system since ~1972. When I removed the original 1968 engine in about 2004, the engine interior water passages had no rust, only a white powder coating from the silicates in the antifreeze.