Lead in oil

[NIck Miller]

Nothing that I can think of... The block in your car is aluminum or Iron, do
you know?  I don't but I assume its iron.  Not sure.

If it is in regard to bearing wear, do you run the proper weight oil for the
engine?  perhaps go to a 20w40 and see if the number changes, this will
offer better protection for the engine/bearings because of its increased
viscosity, but will hamper the engine ever so slightly for the same reason,
and it would technically lower the power output by a few, at most 2-3hp, in
any test I've ever seen.  So little so that its negligible and within the
error range in some tests on some dynos...

Anyway, I assume you're intervals for oil changes are around 8-10k if you
are using analysis, not much I can think of other than do you use Cheap 87
octane gas, and maybe bump up the viscosity of the oil you use if you think
the bearings are wearing too rapidly.