RT80 Operator’s Manual Service - 109
Recommended Lubricants/Service Key
Engine Oil Selection Chart
Approved Coolant
This unit was filled with John Deere Cool-Gard coolant before shipment from factory. Add only John Deere
Cool-Gard (p/n 255-006) or any fully-formulated, ethylene glycol based, low-silicate, heavy-duty diesel
engine coolant meeting ASTM specification D6210 or D4985.
Approved Fuel
The engine is this unit is designed to run on diesel fuel. Use only high-quality fuel meeting ASTM D975 No.
2D, EN590, or equivalent. At temperatures below 32°F (0°C), winter fuel blends are acceptable. See
engine operation manual for more information.
Biodiesel blends up to 5% (B5) are approved for use in this unit. The fuel used must meet the
specifications for diesel fuel shown above. Extra attention is needed when using biodiesel, especially when
operating in cold weather or storing fuel. Contact your Ditch Witch dealer or the engine manufacturer for
more information.
NOTICE: Do not use water or high-silicate automotive-type coolant. This will lead to engine damage or
premature engine failure.
IMPORTANT: Fuel sulfur content should be less than 5000 ppm (0.5%). Worldwide, fuel sulfur
regulations vary widely. Fuel used should always comply with local regulations. Do not use lube oil
meeting API CJ-4 (or other low SAPS equivalent) if fuel sulfur content is above 5000 ppm (0.05%, low
sulfur diesel in the U.S.).
5W- 30
-20
20
40
60
80 100
0
-30 -20
-10
010203040
j28om132t.eps
C
-40
-40
F
120
50
15W- 40
0W-40
Select oil based on ambient temperature expected before next oil change
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