- Oct 6, 2006
- 12,155
- Boat Info
- 1996 450DA
- Engines
- 3116 Caterpillars
Caterpillar specifically recommends Cat ELC (Extended Life Cooloant) which has a 6 year life span can be extended if you begin testing and adding SCA's. They offer 2 flushes: one is for a light cleaning when all you need to do is clean the system of any coolant by products. The other is a complete cooling system flush for applications where you do not know how long or what coolant was used and you need a heavy duty descaled.
Cat ELC is red or bright pink. Remove the expansion tanks cap and stick your finger into the tank and see if you get any solids on your finger and what color your finger is……..or send a coolant fluid sample to the Cat SOS lab for analysis. If your finger test is clean and you get no residue then drain the system and flush it with the light cleanser then drain and flush with fresh water then drain and refill with Cat ELC.
Cat ELC is red or bright pink. Remove the expansion tanks cap and stick your finger into the tank and see if you get any solids on your finger and what color your finger is……..or send a coolant fluid sample to the Cat SOS lab for analysis. If your finger test is clean and you get no residue then drain the system and flush it with the light cleanser then drain and flush with fresh water then drain and refill with Cat ELC.