Could be a factor. I see a lot of PW engines with worn out rollers as well. If the rolling resistance is greater, they're going to skid along the rails and wear out instead of roll.
I tried this, but after a relatively short time the plastic bottle just cracked and the oil leaked out. So, I went back to Labelle light oil .
Wow! Sorry to hear that. I've never had that problem.
I got to say a super tiny drop of this goes a long way. Put it on one end of an axle & it migrates all the way through to the other end. I also use a toothpick or a metal point to direct the oil exactly where I want it.
That little bottle lasts a looooong time. A long time ago I bought two. The second one is still unopened and I have 40 locomotives & several hundred pieces of rolling stock including passenger cars.
Here is one thing I did discover. The oil lasts a long time on newer equipment, but things like post-war need a slightly heavier oil. It worked great for a few weeks then those items seemed to not roll as well when first oiled. My thought is it might be because of the loose tolerances at the axle/roller points requiring heavier oil on that older equipment.