Years ago I had syn oil that had run 7000 miles in my honda pilot vehicle tested at a lab. The report said the oil was in great shape but was at the outer limit for contaminants like fuel dilution and fine metal particles.
My "Takeaway" from this was although syn oil will most likely outlast Dino oil it can't magically get rid of the contaminants. Btw...the 7000 miles weren't hwy.
So...for me my new plan on motors is any good oil...but change more often.
I believe my kaw manual says change oil every 100 hours and filter every 200.
I found 5 qts Mobil 5000 10-40 at ww for $12.85.
My plan is to change oil every 40 hours....filter every 80. Unless the oil looks really clean..then might add 10 hours. Btw...bought a 3 ft chunk of 1/2" id hose at the hardware store that makes changing really ez.
Park the unit on a side hill w/drain valve on lowest corner.... run the hose out past the tire into an old cat littler jug....didn't spill a drop or have to crawl under the machine.
I wonder how good the $12.50 kaw engine filter is.....hopefully a tad better than the average auto equiv considering the kaw recommendation of skipping every 100 hours?
Exaxctly.
Way back in the 60's When I was a young man with hair & teeth I was incidental to a project using X-rays to analyse the metallic particles in avaition oil.
The idea was to plot the actual amount of each alloy in the oil against the measured amount of wear in each part in the engine when they were stripped for routine inspection with the aim of substantially reducing the number of times the engine had to be stripped down,
The project was scientifically an outstanding success and now this is SOP for not only military but also civil and even some private operators.
The actual amount of fine metallic particles in the oil was staggering as was the difficulty of filtering it out so we could analyse it and this was using equipment a lot lot lot better than any bolt on can of paper will ever be.
This changed my ideas about oils for good and for the better.
So it went from very expensive oil changed at long intervals to cheap oil changed very very regularly.
Oil is the cheapest part you can put into any engine and the easiest one replace.
And this got applied to everything, the truckes, vans, hire cars, private cars, courier motorcycles, daily transport motorcycles and even my vintage & veteran motorcycles.