I will give an opinion that is down the center.
Starting when I was 15 years old (27 years ago) I was rebuilding motors at my uncle's machine shop. Rebuilt ~1k motors in the years I was there. We ONLY used Permatex (and FelPro gaskets) and there is only one time I can remember that we had to rebuild one of the motors we did. I don't recall the reason but it was a big deal but most definitely wasn't from failed RTV. I've never ever had an issue using it nor recommending it.
That all being said, I only use Toyota adhesives on my own futher mucking truck gawd-dammit!
Starting when I was 15 years old (27 years ago) I was rebuilding motors at my uncle's machine shop. Rebuilt ~1k motors in the years I was there. We ONLY used Permatex (and FelPro gaskets) and there is only one time I can remember that we had to rebuild one of the motors we did. I don't recall the reason but it was a big deal but most definitely wasn't from failed RTV. I've never ever had an issue using it nor recommending it.
That all being said, I only use Toyota adhesives on my own futher mucking truck gawd-dammit!

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