I have to admit, the only reason I have ever used Mobile 1 was because they were the first synthetic I tried. It was the 80's, and it was a great ad campaign. At about the same time, I tried Amsoil. It was only available by individual sellers like Amway and the like. Saw a demonstration at a swap meet and took home a few bottles. Put some in my Kawasaki KZ, and it was so effective, I had to turn the idle down.
At this stage of my life, I am changing oil because of the calendar, not the miles.
In the late 80's or early 90's, Popular Mechanics did an article on ten cars with over 100,000 miles on them, that were at least 20 years old. They sent out questionnaires to respondents with vehicles in those parameters and compiled the results.
The one thing they all had in common was frequent oil changes, with an "average" of 1500 miles between changes. I'm no Scientist, but it has always seemed to me that frequency of oil changes had a far larger impact than the type of oil used.
In my aviation career, we had to send oil and hydraulic samples to laboratories at hour-based intervals for testing. We'd get results on the break-down, as well as the metallic particles. It took all of the guess-work from determining which parts were going to fail. We would also do this when certain parts did fail. All of that, and we still performed mag. plug inspections with ohm meters.
So I suppose it's a fair question to ask about these small engines, turning high RPM, but for the most part, there is a lot of misconception and snake oil tossed in there. The only reason I looked into what Eric had posted was because I clicked on it, and said, "hey, I've been to Lucas car and drag boat events, and look, they have Classic Car oil!" I need Classic Car oil for my Classic Car, and it's also for Hot Rods! My Classic Car was a hot rod back in 1967, I NEED this!"
Only to find that despite being chocked full of zinc, it's a mediocre performer where it counts, especially for $7.99 a bottle, PLUS shipping. Then again, I could buy it, and leave it laying around, so other old dudes could come over and see it and know how much of a hot rodder I am, as well as a classic car guy. Maybe set it on a wooden bench, with a steel funnel, and a shop rag, along with a 1970 MOPAR calendar. Yeah, I could see that. :thumbsup: