Probably belongs on a different topic -- but here goes.
Check the API designation for this Oil. By way of example, most motor oils off
the shelf are "SM" which has insufficient levels of anti wear agents e.g. ZDDP
as that does attack the plating in the cat converters. Good to use is API designation
CJ-4 (not to be confused with Jeep Oil

), is primarily used for Diesel engines
has sufficient levels of ZDDP. Look for the designations not the marketing.
BTW too much ZDDP has negative side-effects too.
I have no particular negative reason to use Joe's Oil, other than Oil is not their
primary business -- it's racing, building racing machines, and not running a
chem lab with PhD's formulating Oils and additives. So at best they know what's
good but are using a Blender to make the product for them. This Oil is also
claimed to be a Synthetic, is this 100% synthetic or a hybrid? The Aircraft guys
typically recommend hybrids and not to use 100% Synthetics as these Aircooled
engines are designed do deplete/burn Oil to some degree so there is concern
about ash residue and deposits from the Synthetic.
IMHO, I'd stick with a large petro-chemical company but use proper formulation,
CJ-4, Aviation grade Ashless Oil from Phillips, Areoshell, etc. targeted for Aircooled
and solid lifters like Lycomin -- IMHO is a good choice, but a bit expensive.