Could oil get into my coolant through a broken water pump bolt??

[jaymac]

Some of you know my current situation.
I have a water pump bolt that broke off in the block right next to a water passage. It now leaks water between the block and timing cover. I'm planning on pulling the pump and cover and replacing both gaskets and the bolt, but in the meantime, a question:
Could oil be leaking into my coolant through the timing chain cover leak into the water passage?
I'm asking because on the underside of my rad. cap, there is a black oily sludge and a few specks of white (like you'd expect to see in a valve cover w/ a blown HG). My overflow reservoir also never drains back into the rad., and I'm assuming this is because of the leak and concurent loss of system pressure.
So, any guesses where this oily stuff is coming from?
The leak in the timing cover?
Thanks,
J

 

[QDRHRSE]

I don't think so.

 

[bobcatv8]

Very doubtful. More likely the other way around, coolant in the oil. The oil is not pressurized anywhere near the wp bolt.
Regardless, fix it as soon as you can!

 

[Copperstang87]

I broke 3 or 4 bolts into the timing chain cover when I changed my water pump in my old 87 GT. I sealed it up nice with gasket maker and used the gasket and she never leaked!

 

[blown02hd]

it could be possible if the antifreeze is leaking to the bottom of the cover and getting under the seal into the oil pan

 

[jaymac]

so those who think it's not possible, what do you think could be causing the sludge on the rad. cap?

 

[bobcatv8]

May be an unrelated problem.
Either way, Good luck!
Broken bolts SUUCK!!!

 

[jaymac]

they do suck.
If it is an unrelated problem, what could it be?

 

[mustang-a-holic]

why don't you pressure test the cooling system?

 

[8950HO]

Just a tip.Use antiseize on all those wp and front cover bolts when you put it back together.