Hard Time

File: 082696_d50030_055.txt
Page: 055
Total Pages: 101
B.  Questions on Engine Oils


1.  Can the OE/~mO-l5W/4O tactical engine oil (MIL-L-2104) be used in the
high temperature environment of Operation Desert Shield?

    Answer:  Yes.  Tests have been conducted at Ft Bliss and the US~C 29
             PA~S using the OE/~DO-l5W/4O oil in armor and combat vehicles
             operating under sustained high ambient temperatures.   This oil
             performed satisfactorily.  The current engine lubricant appli-
             cation limits allow the OE/aDo-~5W/4O oil to be used in areas
             where the expected ambient temperatures reach 1200F (4490C).

2.  Does the high ambient temperature require that a Crade 50 engine oil be
used?

    Answer:  No.  As noted above, the OE/~O-l5W/4O oil is able to perform
             satisfactorily in high ambient temperature environments.
             Further, the OE/}~DO-4O is also available and can be used in
             place of OE/aDO-15W/40 if so desired.

3.  Is a OE/11DO-50 product available in the supply system?

    Answer:  No.  MIL-L-21O4 does not now carry the OE/HDO-50 grade.   This
             grade was dropped with ~he introduction of the OE/~DO-j5W/4O.

4.  Are OE/HDO (Ml~-L-2lO4) and PE (~ZL-L-2126O) engine oils compatible with
each other?

    Answer:  Yes.  MIL-L-2104 Tactical Engine Oils and MIL-L-2126O
             Operational/Preservative Engine Oils have the same performance
             level except that MIL-L-2l260 oils have an additional preser-
             vative ingredient.

5.  Can MIL-L-46152 (Administrative Engine Oils) be used in lieu of
MIL-L-2L04 oils?

    Answer:  No.  Administrative Service Engine Oils will not, repeat not
             provide the needed performance qualities Eor tactical engines1
             especially when operating on the types of high sulfur con-
             taining diesel fuel available in the Desert Shield environment.
             If inadvertently used, serious engine wear and deposit problems
             would arise.


                                  G-7