This is still a speculative
subject but within the next few years no doubt the requirements for vehicle
turbine engine lubricants will be material. Since the bulk
oil temperature of the oils in service may well be 300 degree F or
higher and a long life is expected , a relatively
high unit price
can be expected for
the lubricant. This points to the
use of synthetic fluids, probably diesters.
As a basis for formulation it is suggested
that those of aircraft turbine lubricants, which are described later, be
considered. A starting basis might be the formulation for MIL-L-7808.
Specifications for such lubricants, issued by
automotive manufacturers, should
be available as soon
as vehicle turbine engines
and drives pass the
experimental stage. Suppliers of diester and additives can be relied
upon for suggestions for formulations to meet the required lubricants.
