I watched lots of his videos. Like above, for basic maintenance he is about right. Performance and advanced stuff he is a little off the mark. the HPOP drains into the oilpan, he even says it in the "Change your HPOP oil" vid.
His teardowns of the 7.3, 6.0 and 6.4L diesels is a nice watch for information purposes. But take his advice with a few grains of salt and a bunch of common sense. There are more than a few forums who directly bash this guy and his rebuttle isn't too solid. Specifically his performance stuff. His numbers have no factual or documented basis.
Just like any other shop, he is out there to make money, as would anyone else in the field. He does seem to want to legitimately want to help out the newbees which is noble but some of his shortcuts are not cool.
At the end of the day, consider this guy to be one of a varying source of information and take from it what you find useful, but do not consider him to be the end all be all expert in diesel engines.
; he claims that it specifically helps the HPOP, which of course it DOESN'T. So do it if you want, don't do it if you don't want; just don't get the wrong idea as to why.
