Oil Viscosity

[dr. d]

Do Thin Oils Destroy Engines? Lessons From GM’s Massive Recall
Engineering Explained

from what i understand,
the engine failure was attributed out-of-spec components and/or sub-optimal assembly.
but they found that using a heavier oil somehow... mitigated the problem.
so between the expensive solution of quality parts manufacture and assembly, and simply using heavier oil...

it's like seiko.
instead of going thru pains in adjusting their more popular movements,
they simply "lower the written standard of accuracy in their brochures".
smart.
in my opinion.
heh heh.