VOA from the BITOG site shows numbers from the analysis. In short, not good:
Mystik JT-8 CI4+
Blackstone report 6/19/2008
No elements Aluminum through Sodium.
Calcium 1100
Magnesium 964
Phosphorus 865
Zinc 1063
SUS Viscosity@ 210f = 89.4
cST Viscosity@ 100c = 17.83
Flashpoint F = 425
TBN = 10.0
You would need at least 1 bottle of EOS added if you have a flat tappet cam.
Comp Cams says that level of Zinc in Mystic is ok in there bulletin.
Engine Oil Selection
As we touched on earlier, another major factor in the increase of flat tappet camshaft failure is
your favorite brand of engine oil. Simply put, today’s engine oil is just not the same as it used to
be, thanks to ever tightening environmental regulations. The EPA has done a great job in
reducing emissions and the effects of some of the ingredients found in traditional oils; however
these changes to the oil have only made life tougher on your flat tappet camshaft. The lubricity
of the oil and specifically the reduction of the important anti-wear additives such as zinc and
phosphorus, which help break-in and overall camshaft life, have been drastically reduced. In
terms of oil selection, we recommend a high “ZDDP”, Zinc Dialkyl Dithiosphosphate, content
oil for the break-in procedure and regular operation. There are several companies that are now
offering specialized “race/off-road” oils, high in anti-friction and anti-wear content, to combat
this specific problem.
These oils carry the SL rating and contain up to 1000 ppm of Zinc/Phosphorous (the Zinc content in today’s “off-the-shelf” oils have been reduced upwards of
20% since 2001 and approximately 35% since 1997).