Interesting topic, and yes, I'll agree that products like Mobil 1, and
Amsoil are superior to conventional oils in many ways. One may wish to
run these for longer intervals, but one item overlooked is the major
shortcoming of most oil filter systems on cars, and light trucks.
I believe I read once that common filters, in which most are smaller
than a soda pop can, usually have had it after a 1000 miles. After
that, they cannot sufficiently filter your oil, and the filth more or
less by-passes the filter, and runs right back into your engine. In
this instance, I don't think it matters how good your oil is. It's dirt,
metal particles and blowby contaminants that are killing a motor's life,
and causing wear, more than the breakdown of the oil itself.
A very good option is the use of a remote filter which can be much
larger, and have a greater capacity, and/or the use of a Bypass filter.
I know Amsoil sells these, and they do work.
With the addition of a Bypass Filter, much better filtration occurs
quite rapidly in a system, and one also increases the oil capacity in a
system, thereby also offering better oil cooling/protection to an
I can see the advantages this has for heavyduty use such as SUV's/Light
Trucks towing heavy loads, and for those too, who have diesel motors in
thier rigs. Mark.