Hi Grumpy.
I really like this part; "causes a kind of Darwinian "survival of the fittest", so by the time the oil is changed, many of the weakest have broken down, whether due to time/temperature, or pressure. Hence if the reclaimed oil were processed as well as virgin oil is, then had the same additives provided, it would be the better of the two products."
Hopefully one day reclaimed oil will get the processes and additives it deserves.
On another note Grumpy, after months of deliberation and research I bought a Greenfield Deluxe Fastcut Kawasaki V21.5/34, as seen in my new avatar. I must say reading archives from here helped in my decision.
I kind of remember you say something about taking some measurements, of the clutch plates I think. I have so many 'bookmarks' from ODK, I must start to categorize them.
Back to the oil thread.
I suppose it should be also mentioned that below zero degrees Celsius ambient a multigrade like 10W-30 be used. I don't think many would mow in zero or below weather, but the thread also implies small engines, like generators pumps etc.
I am considering SAE 40 for extremely hot ambient as we can have in Queensland summers and change back to 30 in winter.
Some advocate SAE30 go's to 35C, others 40, and SAE40 from 20 to 40+. Hopefully Gadge and others will comment on this too.
