Caterpillar C15 Industrial Engine — Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Maintenance
For the Caterpillar C15 Industrial Engine, from the Caterpillar owner's manual.
Applies to: Caterpillar C1.5 engine
Before you start
- Cooling system coolant additive contains alkali. Avoid contact with skin and eyes.
- Do not drink cooling system coolant additive.
Procedure
- Test concentration of SCA with the 8T-5296 Coolant Conditioner Test Kit.
- Fill syringe to the '1.0 ml' mark with coolant.
- Dispense 1.0 mL coolant sample into empty mixing bottle.
- Add tap water to the mixing bottle to bring level to '10 ml' mark. Cap and shake.
- Add 2 to 3 drops of 'NITRITE INDICATOR SOLUTION B'. Mix in circular motion.
- Add 1 drop of 'NITRITE TEST SOLUTION A'. Mix in circular motion.
- Repeat step 6 until solution changes from red to light gray, green, or blue. Record number of drops.
- Interpret results with Table 9.
- If adding SCA: remove filler cap slowly; drain some coolant if necessary; add proper amount of SCA; clean and install filler cap.
Tools required
- 8T-5296 Coolant Conditioner Test Kit Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Do not exceed six percent SCA concentration for coolant/antifreeze
- Do not exceed eight percent SCA concentration for water and SCA
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.