Coolant Filtration Maintenance
SCA and SCA+ Chemical Differences Donaldson SCAs combat a whole series of coolant system problems including, rust, scale from minerals, acidity from antifreeze, the intrusion of air, fuel and oil to coolant, pitting of engine parts from cavitation, foaming from coolant aeration and silicate drop-out from over-concentration.
SCA Chemicals Standard Protection
SCA+ Chemicals Improved Protection
Function
Provides protection against cavitation, erosion, and inhibits corrosion Alkaline buffer to prevent acidity and control pH Reduces corrosion of ferrous metals and aluminum Creates a plating effect on copper and copper alloys, protecting them from direct contact with coolant and oxygen and subsequent corrosion
Nitrite
Nitrite + Molybdate
Borate Silicate
Phosphate
Silicate
Benzotriazole
Tolyltriazole
Cooling System Service Guidelines Below are recommended service intervals at flush and re-charge time.
Servicing up to 75.7 L / 20 gal Install a new filter corresponding SCA/SCA+ units
Service Interval @ Miles @ KM
0-5 gal 0-19 L
6-10 gal
11-15 gal 41.6-46.7 L
16-20 gal 60.6-75.7 L
@ Hours
22.7-37.8L
5,000
8045
125 hrs 250 hrs 375 hrs 500 hrs 625 hrs
n/a
2 units 2 units 4 units 4 units 4 units
2 units 4 units 4 units 6 units 8 units
2 units 4 units 6 units 8 units 12 units
10,000 15,000 20,000 25,000
16,090 24,135 32,180
2 units 2 units 2 units 2 units
40225
*SCA or SCA+
46 • Engine Liquid Filtration
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