lower viscosity oils or Multigrade products will usually result in less than nominal engine life.
MIL-L-46167 ARCTIC LUBE OILS FOR OPERATION BELOW TEMPERATURES OF -20°F.
For temperatures below -20°F, lubricating oil, Arctic, MI L-L-46167 is required for the TMS300-5.
Multigrade oils are NOT recommended. An SAE 30 grade is desirable for year-round use when cold starting can be
accomplished. Multigrade oils should be considered only as the "last resort" to facilitate starting when prolonged exposure
to temperatures below freezing is unavoidable and adequate starting aids are unavailable.
Experience clearly indicates that Multigrade oils are NOT comparable to SAE 30 lubricants for heavy duty diesel service.
Cylinder liner scuffing, liner port and ring groove deposit levels are all greater using Multigrade lubricants. This results in
shortened engine life.
COLD WEATHER OPERATION.
Cold weather starting can be aided when immersion type electrical coolant heaters can be used. Other practical
considerations, such as the use of batteries, cables and connectors of adequate size, generators or alternators of ample
capacity, proper setting of voltage regulators, ether starting aids, oil and coolant heater systems, and proper fuel selection
will accomplish starting with the use of SAE 30 oil. For complete cold weather starting information, consult an authorized
diesel service outlet.
It is recommended that new engines be started with 100 hour oil change periods. For highway vehicles this corresponds
to approximately 1,000 to 2,000 miles. The drain interval may then be gradually increased, or decreased with experience
on a specific lubricant. Also consider the recommendations of the oil supplier (analysis of the drained oil can be helpful
here) until the most practical oil change period for the particular service has been established.