My $.02. The "service" economy has a lot of waste and downside built in. I'm not interested in purchasing said services myself. After these vehicles fall out of warranty though, there's going to be a huge market for "service" hacks. That'll be interesting to watch.
The oil question goes around my Jeep Diesel forum a lot. After lots of numbers and tests the consensus seems to be any brand of CK-4 oil is going to be just fine.
My L3301 would not start often, even when it had just been running. I could leave it alone and it would eventually start. I thought I had battery, alternator or safety switch issues. It was in the shop for 3 months and came out the same way. After eliminating battery, switch and safety...
Our local TSC has a wide selection of nuts and that's how I found the correct size for a nut I have having a hard time finding. I used a thread pitch tool and ordered the nuts from Amazon. They didn't fit.. thought I was going crazy, went into TSC and found/bought the same nuts I had already...
I don't know how they think they can operate and service small machines if they increase the skill required to work on them. My L3301 was in the shop for 3 months because no-one could fix it. ****, they gave it back to me and it still wouldn't start half the time. I ended up fixing it myself...