Quote:
Originally Posted by Red_Chili
4) the major eaters of HGs are infrequent head bolt torqueing, overheating, and lousy coolant condition.
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I have changed quite a few HGs, at least a dozen, probably more. 3VZ-E's, 22R/RE's, even a couple 4A Corolla engines. I have never once re-torqued a head bolt. Ever. Never had a failure either.
But I ALWAYS ALWAYS use Toyota red coolant, mixed with distilled water. My '87 has had it since new, and it's still on the original radiator. The inside of that engine is still sparkling clean, even after 220K miles.