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Coolant Testing


OATmeter
Every 250 hrs or oil change
Hand-held inhibitor refractometer (Atago N10E) to check RCP concentration in water-only systems
Test Strip
Every 250 hrs or oil change
Colour pad test strip for glycol and RCP inhibitor concentration. Use for all coolant systems.
Coolcheck® Coolant Analysis
Annually
A comprehensive chemical evaluation of the coolant by laboratory analysis. For coolant / antifreeze and water-only systems.


TEST RESULT
EFFECT
pH
low pH and high iron
Piston blowby or overheated coolant. Severe corrosion.
glycol%
high glycol
Too much antifreeze concentrate. Poor heat transfer and solder attack
nitrite
low nitrite and high iron
Not enough SCA added to Heavy Duty coolant. Cavitation and corrosion.
silicate
high silicate
Too much SCA added to Heavy Duty coolants. Water pump seal leakage.
sebacate
low sebacate
Conventional coolant or water added to RCP long life coolant. Iron and solder attack
lead
high lead glycolate
Overheated coolant and/or excess SCA solder attack.

 

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