Chrysler 2005 Crossfire SRT6 Service Manual page 14

0 - 4 LUBRICATION & MAINTENANCE
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CAUTION: Mopar Antifreeze/Coolant, 5 Year/100,000 Mile Formula (MB 325.0) may not be mixed with any
other type of antifreeze. Mixing of coolants other than specified (non-HOAT or other HOAT), may result in
engine damage that may not be covered under the new vehicle warranty, and decreased corrosion protec-
tion.
COOLANT PERFORMANCE
The required ethylene-glycol (antifreeze) and water mixture depends upon climate and vehicle operating conditions.
The coolant performance of various mixtures follows:
Pure Water: Water can absorb more heat than a mixture of water and ethylene-glycol. This is for purpose of heat
transfer only. Water also freezes at a higher temperature and allows corrosion.
100 percent Ethylene-Glycol: The corrosion inhibiting additives in ethylene-glycol need the presence of water to
dissolve. Without water, additives form deposits in system. These act as insulation causing temperature to rise to as
high as 149°C (300°F). This temperature is hot enough to melt plastic and soften solder. The increased temperature
can result in engine detonation. In addition, 100 percent ethylene-glycol freezes at -22°C (-8°F).
50/50 Ethylene-Glycol and Water: Is the recommended mixture, it provides protection against freezing to -37°C
(-35°F). The antifreeze concentration must always be a minimum of 44 percent, year-round in all climates. If per-
centage is lower, engine parts may be eroded by cavitation. Maximum protection against freezing is provided with a
68 percent antifreeze concentration, which prevents freezing down to -67.7°C (-90°F). A higher percentage will
freeze at a warmer temperature. Also, a higher percentage of antifreeze can cause the engine to overheat because
specific heat of antifreeze is lower than that of water.
CAUTION: Richer antifreeze mixtures cannot be measured with normal field equipment and can cause prob-
lems associated with 100 percent ethylene-glycol.
COOLANT SELECTION AND ADDITIVES
The use of aluminum cylinder blocks, cylinder heads and water pumps requires special corrosion protection. Only
Mopar Antifreeze/Coolant, 5 Year/100,000 Mile Formula is recommended. This coolant offers the best engine cool-
ing without corrosion when mixed with 50% distilled water to obtain a freeze point of -37°C (-35°F). If it loses color
or becomes contaminated, drain, flush, and replace with fresh properly mixed coolant solution.
CAUTION: Do not use coolant additives that claim to improve engine cooling.
DESCRIPTION - TRANSMISSION FLUID
Automatic Transmission Fluid
Note: Refer to the maintenance schedules for the recommended maintenance (fluid/filter change) intervals
for this transmission.
Note: For fluid level checking procedures, (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1/
FLUID - STANDARD PROCEDURE) .
Use ATF approved to MB 236.10, MB 236.12, such as Mopar part number 05127382AA. Synthetic Dexron III Auto-
matic Transmission Fluid may be substituted.
FLUID ADDITIVES
DaimlerChrysler strongly recommends against the addition of any fluids to the transmission, other than those auto-
matic transmission fluids listed above. Exceptions to this policy are the use of special dyes to aid in detecting fluid
leaks.
Various "special" additives and supplements exist that claim to improve shift feel and/or quality. These additives and
others also claim to improve converter clutch operation and inhibit overheating, oxidation, varnish, and sludge.
These claims have not been supported to the satisfaction of DaimlerChrysler and these additives must not be
used. The use of transmission "sealers" should also be avoided, since they may adversely affect the integrity of
transmission seals.