COOLING SYSTEM ELC Condition (Contamination and Inhibitor Concentration) representative for recommended ELC test kits, test strips, and laboratory sample procedures. 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 maintenance may cause coolant degradation and could result in damage to the cooling system and engine components.
Consult your dealer or the ELC manufacturer’s ELC Extender Add ELC extender if necessary at the maintenance interval under “Cooling”. Coolant Filter 5 If your vehicle came with a non-chemical filter (“blank filter”), replace it only with a blank filter at the interval specified in the Preventive Maintenance Schedule on page 5-12. Never use filters that contain SCAs in an ELC-filled system. (03/17) Y53-6077-1B1 5-83 Desired ELC/Water ratio:
10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% Freeze point °F (°C) +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) Items in bold are the recommended levels of concentration.