Hombre XS Space Cab L4-2.2L CPC (1997)
Coolant: Technical Service Bulletins
Engine Coolant - Propylene Glycol Acceptable for Use
BULLETIN NUMBER
SB96-14-L002
ISSUE DATE
JANUARY 1996
GROUP
MISCELLANEOUS
PROPYLENE GLYCOL - BASED ENGINE COOLANT
(Supersedes SB94-14-005)
AFFECTED VEHICLES
All Isuzu passenger, sport utility, and light truck models.
SERVICE INFORMATION
Isuzu has determined that propylene glycol-based engine coolants, such as Safe Brands' Sierra engine coolant, will perform adequately under most
vehicle operating conditions. As a result, propylene glycol-based engine coolants may be used in Isuzu vehicles.
A few important points to remember regarding propylene glycol-based engine coolants:
^
Freeze/boil point levels for propylene glycol are different than for ethylene glycol.
^
To accurately determine the freeze/boil protection level, it is imperative that the coolants not be mixed.
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Prior to adding propylene glycol engine coolant to the cooling system, all ethylene glycol coolant must be removed.
^
When changing the coolant to propylene glycol, be certain to thoroughly flush the heater core and block as well as the radiator.
