castech heads oil and antifreeze mixing together

[doylee4693]

Ive been googling this issue, I cant find a straight answer and my anxiety is thru the roof about this. Is 706 heads the only castech heads? I have 862 stamped on my heads, am i safe from the stupid castech issue? I was able to pull this link up about a guy who jad 862 heads with castech but its the only one I could find. http://ls1tech.com/forums/generatio...heads-thanks-castech-need-recomendations.html Any ideas.

 

[Yukon_01]

All I know about this issue is I used to have an 04 Avalanche withe the 5.3 L and the heads went to crap after 43,000 miles and I ended up rebuilding the top end of the motor, with some nice aftermarket heads.

If you have milky colored oil I would say you have a problem.