VX L67 - Oil in Coolant & reservoir

[Raging Bull]

I checked my coolant and it was very discoloured, appeared to have traces of oil in it and after checking the dip stick from the reservoir it was covered with dark oily stuff especially at the bottom. I've read crappy Inner Manifold Gaskets can cause this or maybe the auto transmission tank has split inside the radiator since I'm not sure if its the engine or tranny oil but the car is running fine not overheating and the auto feels normal. Does anyone have any experience with this? Cheers.

 

[camtech]

i just pulled heads off mine cos of that and found cracked cyl head. put new yella terra heads on and good time to port out s/c housing while its apart. Is there a milky buildup under your oilcap and radiator cap?

 

[Raging Bull]

I checked my oil dipstick and oil cap and there's no signs of any milky substances the oil appears normal colour. I think it's fairly common for this to happen with the SC6 since the Inlet Manifold Gasket is a crappy plastic POS.

 

[camtech]

are you still using the genuine coolant with the tablets because it can get real messy with some age

 

[don0xer]

lim gasket... go to yella terra and buy a metal one

 

[Raging Bull]

So it's the Inlet Manifold Gasket then? Or more precisely the Lower Inlet Manifold Gasket? I'll pick it up from Yella Terra then, is there any special way to drain the system of all the oil? Cheers.

 

[vxcalais_01]

Intake manifold gasket for sure. Change it over, use Hylomar or Permatex on teh gasket and make sure you use the 3 GM radiator pellets in the coolant. These will help seal up any minor leaks.

 

[alien]

When changing over the gasket get Felpro gaskets. Those things are awesome! I know one that lasted 28 years in a performance vehicle, the only reason it didn't last any longer was because the engine was totally rebuilt.

I use felpro in my L67 when i did a head gasket and not one problem with the Felpro.

 

[Raging Bull]

I was gonna go to Yella Terra and ask them about their metal ones? Are those the best option?

 

[buzuki]

could be the radiator, my mates did the same thing in a vx, trans oil was slowly getting into coolant