Description
Fleetguard DCA2 supplemental coolant additive (SCA) — the nitrite/borate chemistry required by GM Duramax, Caterpillar, and Detroit Diesel engines and approved for marine and railroad applications. Used to charge or recharge a diesel cooling system to protect against cylinder-liner pitting (cavitation erosion) and to neutralize acid build-up. Sold in pint bottles (DCA30L) and larger pack sizes — verify the listed package size before ordering quantity.
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Product | DCA2 Supplemental Coolant Additive |
| Package Part Number | DCA30L (1 pint), DCA45L (5 gallon) — confirm the listing |
| Active Chemistry | Nitrite (liner-pitting protection) + Borate (acid neutralization) |
| Coolant Compatibility | Conventional ethylene-glycol coolants and water-based marine/rail systems |
| Typical Use | Charge or recharge SCA level on conventional cooling systems |
Cross References
This part replaces or is equivalent to the following part numbers:
- Cummins: 3305375
- Caterpillar: 9N6123, 8T1589, 3P2044, 3P2043
- GMC / GM: 25011414, 25010099, 23507854
- Motorcraft: FW13
- Case IH: 1532579C1, 690126C1, 331509
- John Deere: RE12842
- IHC: 631915C1
- Komatsu: CUDCA30L
- Volvo: VOE200973337, 200973337
- Atlas Copco: 3222309423
- Fiat-Allis: 61259014
- White: 61050001
- E.R.F.: C3305372
- Same: 710770
- Orenstein & Koppel: 8708035
- Perry: LP2032, LP2016OZ, LP2016, LP10
Applications
This SCA is approved or required for:
- GM Duramax 6.6L (LB7, LLY, LBZ, LMM, LML, L5P)
- Caterpillar on-highway and off-highway diesels (3406, C13, C15, ACERT models per Cat coolant spec)
- Detroit Diesel two-cycle (Series 53/71/92) and four-cycle Series 50 / Series 60 engines
- Marine diesels using straight-water or low-glycol cooling
- Railroad locomotive diesel cooling systems
Cummins-branded engines (B, C, ISX, X-series) are now spec’d on Fleetcool EX / ES Compleat (DCA4 Plus / DCA2 Plus) — verify the engine OEM coolant specification before adding DCA2 to a Cummins cooling system.
