ENGINE MAINTENANCE - Cooling System Maintenance Condition formulations. If the coolant is mixed with more than 25% of a different formulation, engine corrosion damage could occur. If mixing exceeds 25% of total system volume, it is recommended to flush and refill the system completely with one type of coolant. NOTE Perform a visual inspection of the coolant. It should have no cloudiness or floating debris. Determine the chemical inhibitor concentration level by using an extended life coolant 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 coolant manufacturer’s representative for recommended extended life coolant test kits, test strips, and laboratory sample procedures. 2 Maximum recommended ELC concen- tration is 60% ELC and 40% water by volume (a 60/40 coolant mixture). The minimum recommended concentration is 40%.
Coolant Filter Your engine is equipped with a coolant filter designed to capture and remove harmful deposits from the cooling system to help prolong system life. It is a "blank filter" and does not contain chemicals or time-release additives. Replace it only with a blank filter at the interval specified in the Preventative Maintenance Schedule. Never use filters that contain supplemental coolant additives (SCAs) in an ELC-filled system. Glycol Concentration Level Coolant Extender Add extended life coolant extender, if necessary, according to the corrosion inhibitor concentration required. DO NOT add coolant extender to nitrite-free coolant.
CAUTION Use of non-genuine coolant filters can cause severe engine damage. Checking Coolant Level Check the coolant level daily. See Coolant Level on page 30. When adding coolant, avoid mixing different brands and 44 Y53-1166-1G1 (08/2018) Level Desired Coolant / Water Ratio Freeze Point °F (°C) Recommended Levels 40% -12 (-24) 45% -23 (-31) 50% -34 (-37) 55% -50 (-46) 60% -62 (-52)