For Engine Oil Specifications refer to Engine Oil Specifications in this Section
Recommended Engine Oil and Oil Filter Service Intervals will be located in operators manual (Maintenance
Diesel Engines: When air restriction reading (in inches of water vacuum) reaches the following, clean or replace
engine air cleaner. Refer to Restriction Gauge Instructions in operators manual.
Inches of Water Vacuum
25 in. H20 or 635mm
Due to the many variables associated with element washing, only new air cleaner elements should be used to
replace elements that have become restricted beyond the maximum recommended restriction level.
SAE-1OW Engine Oil for temperatures - 18C (0°F) and up. For temperatures below - 18C (0°F) use three parts
SAE-10W engine oil to one part kerosene. The mixture can safely be used in temperatures up to 0°C (32F).
IH Power Steering Fluid (1 Quart Can No. 990625-CI). For S-Series 1600-2100.
G. Lubrication Procedures:
With chassis load on axle, force grease through thrust bearings. Then with axle lifted clear of floor, force grease
between king pin and bushing surfaces. Use IH 251H EP grease.
Do not raise wheel end off ground when greasing.
H. Use straight mineral oil SAE 90 for temperatures - 18°C (0°F) and up. Use SAE 80 for temperatures below - 18°C
(0°F). Special Recommendations: Where temperature is consistently below -18C (0°F) and where parked
vehicles are exposed to unusual cold for long periods, use SAE 75. Where temperatures are consistently above
320C (900F) or unusually hot, use SAE 140 straight mineral oil.
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