Service - 68 ST37x Operator’s Manual
Recommended Lubricants/Service Key
Engine Oil Temperature Chart
For more information on engine lubrication and maintenance, see your engine manual.
Approved Coolant
This unit was filled with coolant meeting Cummins
®
CES 14603 before shipment from factory. Add or
replace only with coolant meeting this specification, such as Fleetguard
®
ES Compleat coolant. This
coolant is available, pre-diluted, from your Ditch Witch
®
dealer as part number 255-1055. Contact your
Cummins service partner for a full list of approved coolants meeting CES 14603.
NOTICE:
• Do not use water or high-silicate automotive-type coolant. This will lead to engine damage or
premature engine failure.
• Do not mix heavy-duty diesel engine coolant and automotive-type coolant. This will lead to coolant
breakdown and engine damage.
Temperature range anticipated before next oil change
SAE 10W-30
SAE 5W-30
SAE 15W-40
SAE 20
SAE 30
t43om040w .eps
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