You really want to be that dishonest, and try rewriting the history of the thread? I'm being 100% objective. You said the 8N didn't have a sleeved engine, I pointed out that they do. Period, end of story, you were wrong, and are making up stuff you don't really understand.
If someone knows so little about tractors to not know that the highest production tractor, of all time, had a sleeved engine, I'm not sure they really have the credentials to opine about the "superior" engineering, materials, or workmanship of any brand tractor. The idea is actually funny....
The early 8N engines had thinner sleeves, the later engines have thicker sleeves. Many people choose to take the extra step to have the older engines bored to accept the thicker sleeves since its not really that big a deal. It isn't, however, necessary, and either style can be rebuilt indefinitely.
If Deere really was the best at everything, they wouldn't have had to get Yanmar to design, engineer, and build so many engines for them. BTW, the chances that Deere actually engineers their own oils, and fluids, is about zero. Winchester doesn't engineer, or make, their own gunpowder, and Deere doesn't engineer, or make their own oil....they pay specialists to do that.
I did hear, however, that Deere engineers, working with experts at Pfizer, have come up with the cure for male pattern baldness, and they put the necessary compound in their ball caps (only available at licensed mega dealers). They were pretty sure it would be a hit with the aging population of their devotees...pretty considerate if you think about it.