Geez I get confused so easily.
I watched GM explain how through wonderful new machining and honing technology, they are now producing "no break-in" engines. They claimed it was an expensive process, but the limited number of engines they do it to can use synthetics from the get go. But after reading this 4 page explaination of
oil theory, I see it was really possible all along. No special machining required. GM sure waisted their money
They also claimed their bores are good for 300,000 miles with the new process.
I've yet to hear a
synthetic zealot explain why when Mobil introduced their synthetics to the aviation community a few years back, they had to pull it off the shelf after having to buy over a thousand of their customers engines. They re-released the
oil with the addition of "friction modifiers, anti-scuffing agents and anti-corrosive agents". Sounds like they added good old fashion motor
oil to the mix to me.
I've got nearly a thousand track miles on my cobra. I've always run regular oil. Last year I ran Mobil One at the track. I came home and had to replace engine bearings. The oil pick-up in a wet sytem will always get a good gulp of air on a road coarse and I found
synthetic oil to provide no benifit from this extreme but common condition. I ran Putnam Park yesterday with regular oil and came home with the same oil pressure I left with.
Seems to me, it is more important that you have oil, than what kind.
Maybe someone can explain why I am so confused.
Bob