ENGINE COOLING SYSTEM
PART 8: MAINTENANCE AND SERVICE
– 192 –
Y53-6032
(R05/10)
ELC Condition (Contamination and Inhibitor Concen-
tration)
Perform a visual inspection of the ELC. It should have no
cloudiness or floating debris. Determine the chemical
inhibitor concentration level by using an ELC-specific test
kit or test strips. Inhibitor concentration level determines
corrosion protection. If you are concerned about possible
coolant quality, contamination, or mechanical problems,
submit a coolant sample for analysis. Improper mainte-
nance may cause coolant degradation and could result in
damage to the cooling system and engine components.
Consult your dealer or the ELC manufacturer’s represen-
tative for recommended ELC test kits, test strips, and lab-
oratory sample procedures.
ELC Extender
Add ELC extender if necessary at the maintenance inter-
val under
“Cooling” on page 152
.
Coolant Filter
If your vehicle came with a non-chemical filter (“blank fil-
ter”), replace it only with a blank filter at the interval speci-
fied in the
“Preventive Maintenance Schedule” on
page 143
. Never use filters that contain SCAs in an ELC-
filled system.
Desired ELC/
Water ratio:
0%
10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% 100%
Freeze point
°F (°C)
+32
(0)
+25
(-4)
+20
(-7)
+15
(-9)
+10
(-12)
+5
(-15)
-5
(-21)
-12
(-24)
-23
(-31)
-34
(-37)
-50
(-46)
-65
(-54)
-75
(-59)
-84
(-64)
-70
(-57)
-55
(-48)
-43
(-42)
-30
(-34)
-5
(-21)
Y53-6032.book Page 192 Monday, May 24, 2010 3:37 PM
Summary of Contents for Peterbilt 587
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