Holiday imperial 2001, Owner'S Manual, Page: 270 / 301

Chassis Information
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I M P E R I A L
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level at all times, resulting in increased cooling efficiency the
coolant level should be at or above the appropriate mark on
the reservoir tank when the system is cold.
• Check the coolant level daily or when refueling.
• Drain and flush the coolant system every 60,000 miles or two
years and refill with a heavy-duty coolant (50/50 mix of water
and anti-freeze).
• If the coolant is below the MIN mark the low coolant alarm
will sound and the low coolant light will appear on the dash.
You will need to stop and check for coolant loss before driving.
• The coolant level to remain between the MAX and MIN level
in the reservoir.
Routine Maintenance Recommendations
1. Check the SCA concentration level every 15,000 miles/6 months.
2. Change the coolant filter every 15,000 miles/6 months.
3. Drain and flush the system every 240,000 miles/2 years, and refill with
a heavy-duty coolant (50/50 mix of water and antifreeze).
4. Always use antifreeze. In addition to freeze protection, antifreeze is
essential for overheat and corrosion protection.
5. The supplemental coolant additive (SCA) is required.
6. Freeze point should be measured every 15,000 miles/6 months.
Fully formulated products contain SCA and are required to protect the
cooling system from fouling, solder blooming and general corrosion. The
cooling filter is required to protect the coolant system from abrasive materi-
als, debris and precipitated coolant additives.
Supplement coolant additives, or equivalent, are used to pre-
vent liner pitting, corrosion and scale deposits in the cooling sys-
tem. Use the correct Fleetguard coolant filter to maintain the rec-
ommended SCA concentration in the system. Maintain the correct
concentration by changing the service filter at each oil drain inter-
val.
NOTE: The correct filter is determined by the total cooling sys-
tem capacity and oil drain interval. Refer to the Coolant
Capacity Specifications in this section.
CAUTION: Insufficient concentration of the coolant additives
will result in liner pitting and engine failure. The SCA concen-
tration must not fall below 1.2 units or exceed 3 units per gallon
of cooling system capacity.
Coolant
-Additive (SCA)
The coolant capacity, when changing
the antifreeze, is approximately 11½
gallons.