I don't want to belabor this, but I have to respond to you -
Is it OK that MH recommends Amsoil 10W-40 because of the ZDDP levels while that is different than GM saying Mobil1 5W-30 is what's needed? Does he know more than the engineers who designed this motor, or is that his personal opinion? Why does he say a "heavier" weight oil with higher levels of Zinc and Phosphorous is so much better than what the factory specifies? If it was so beneficially great, then why wouldn't the factory switch to this recommendation too?
All the 0W-40 designation means is that that oil is suited to a wider variety of temp extremes than a 10W-30, and not that it matters, but where I live it varies between 30 and 100 at different times of the year and any engine oil on here will also function adequately in those extremes.
You are skirting around the questions I asked you and are avoiding the issue because you cannot answer me. And you also cannot show me any evidence of higher wear or damage to any part of the engine from using any of these oils. I expect next you'll say that compression testing is only an "estimate" of what's happening inside the cylinders.
And explain how a lower weight oil (0W) decreases emissions until the engine warms up. Then tell me where I said anything close to "The claim that it "reaches critical components faster" is more marketing bullsh*t to make you feel good than anything."
Then you said "I'm sure the entire of the automotive industry experts and all the design engineers I work with in a company that has designed and built flat tappet air cooled aviation engines for 93 years are wrong and you have it figured out. "
No, I have not figured it out, but maybe MH or the other gurus who work on these cars have, and YOU are wrong. Oh no, that's inconceivable. Air cooled aviation engines and liquid cooled automotive engines are the same thing, same requirements? That's news.
And you do realize that things do change over the years, right, that advances are made? What was originally recommended 32 years ago may not be as good as what's available now?
So I'm done here now, have at it, and if you're going to make another pronouncement, back it up with some real objective evidence. We all want to learn on here.
The oil you use is just as much a personal preference as the tire pressure you want, as I said. All the modern oils perform pretty much the same and if you change them on schedule, you'll be just fine no matter your choice.
