TM 5-3805-280-24-2
Engine Tune-Up and Break-In
ENGINE OIL CONSUMPTION
100
9
All engines consume some oil. The consumption rate
When changing to a premium oil such as
TORQ-GARD SUPREME PLUS-50, little oil
depends on loading, design of key parts and engine
condition. Since fuel consumption is an indicator of
consumption change is expected although a small
operating power levels, fuel used versus oil consumed
percentage of engines may experience a noticeable
is a critical factor in analyzing oil consumption. Oil
change in consumption rates. This may be due to the
consumption should be measured over a 100 hour
following:
period.
The previous oil may have left deposits on internal
components. Use of PLUS-50 oil will cause
Long term oil consumption (3 oil drain intervals after
the engine is broken in) with consumption rates poorer
different chemical reactions in those deposits. The
than 400:1 (100 gallons of fuel and 1 quart of oil)
time required for the engine to regain the previous
indicates a need to monitor/investigate. Suggested
oil consumption rate will vary from one to three
steps would be:
normal drain intervals.
TORQ-GARD SUPREME PLUS-50 contains a
Check for signs of ingested dust or perform an
high performance anti-oxidant along with other
OILSCAN Test to check for silicon.
additives resulting in the oil remaining in the
Check for proper crankcase oil fill level.
specified viscosity grade throughout the
Perform compression test to find low compression
recommended drain interval. API oil grades CD, CE,
cylinders.
and CF-4 universal engine oils do not provide this
Remove head and inspect for glazed or worn liners.
oxidation resistance which results in more rapid
Inspect pistons for carbon deposits in the ring land
thickening. Increased oil viscosity can reduce oil
grooves.
consumption.
Measure valve stem OD and valve guide ID to
determine clearance.
NOTE: Ring gap alignment does not identify the leak
source.
Intake valves do not have valve stem seals
and some oil deposits on the valve stem tulip
is normal.
TORQ-GARD SUPREME is a registered trademark of Deere &
Company
PLUS-50 is a registered trademark of Deere & Company
DPSG,OUO1004,114
1907MAY981/1
13-472
