Blue Bird M380 2003, Owner'S Manual

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5 – Maintenance/Service Procedures – Engine, Transmission, Chassis______________________M380 Owner’s Manual
5-1-4 Rev. “F”
5-1.3 Engine Quick Reference Guide
5-1.3.1 Cooling
Routine Maintenance Recommendations
•
Check every 18,000 miles/6 months
•
Change coolant filter every 18,000 miles/6 months
•
Drain and flush system every 72,000 miles/2 years and refille with heavy-duty coolant. Use a
50/50 mix of water and antifreeze.
NOTE: Always use antifreeze. In addition to freeze protection, antifreeze is essential for
overheat and corrosion protection.
The supplemental coolant additive (SCA) is required with the ISL Engine.
Definition of Heavy-Duty Coolant
A combination of 50/50 water and low silicate antifreeze (ethylene glycol or propylene glycol are
acceptable).
Protects to -34°F. Freeze protection decreases above 68% antifreeze. Antifreeze must meet
ASTM D4985 (GM6038M) specs.
How to Test Coolant Concentration
Refractometer Fleetguard #C2800 is recommended vs. floating ball due to accuracy.
Water Quality Requirements
Calcium/Magnesium Max. 170ppm as CaC0
3
+MgCO
3
Chloride Max. 40ppm as Cl
Sulfur Max. 100ppm as SO
4
A conservative approach to cooling system maintenance would include an analysis of your home
base tap water supply. Your Cummins distributor can provide this service as well as sample bottles
and other coolant test devices. Consider using pre-formulated antifreeze when on the road or when
water quality is unknown. The use of distilled water is also acceptable.
Pre-formulated Antifreeze and Supplemental Coolant Additives (SCA)
Pre-formulated antifreeze, such as Fleetguard Compleat, offers a vehicle owner the convenience
of a pre-mixed antifreeze solution containing high quality water and the correct chemical balance
of antifreeze and SCA.
5-1.3.2 Lubricating Oil
Routine Maintenance Recommendations
Oil Drain Interval Fleetguard Filter
18,000 miles/1 year LF 9009
Replace oil filter at EVERY oil drain interval.
Multigrade vs. Straight Weight
High quality 15W40 oil API CG-4 or CH-4 is recommended.
Why multigrade?
•
Reduced deposit formation
•
Improved cranking in low ambient temperatures.
•
Shortens time-to-block pressure in low ambients.
•
Improved lubrication during high temperature operation.
Synthetic Oil
May be used in ISL engines provided they meet performance and chemical requirements.