Oil drain to do a Head/ Head Gasket RR? + more

[dbl overdrive]

Sorry to hear that.
I just did the inframe on my truck due to a spun cam bushing. The way I new it was time was the oil samples showed a spike in copper and aluminum . The head was 4200.00 for a NEW one. I followed Rawzes advice and stayed away from the 600.00 cheaper reman.
My engine made it to 959,000 and looked good inside other than the injector cam.
So my advice is do oil samples and follow what others are saying as well. But be prepared for worst case if you remove the head. Good luck friend. It's stressful but you will get through it.