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Caterpillar 3126B — Cooling System Recommendations

Maintenance

For the Caterpillar 3126B, from the Caterpillar owner's manual.

Applies to: Caterpillar 3126B

Before you start

  • DO NOT use commercial antifreeze with high silicate content formulated for gasoline engines.

Procedure

  1. Use only distilled or deionized water.
  2. Antifreeze must be a low silicate type that meets TMC RP329, ASTM D5345, or D4985 specifications. DO NOT use commercial antifreeze with high silicate content formulated for gasoline engines.
  3. Use conditioner or inhibitor to maintain a three to six percent concentration in cooling system. Requirements are different for ELC (Extended Life Coolant) — consult your dealer.
  4. Do not mix different antifreeze and conditioners.
  5. Cat ELC recommended for six-year protection. Meets Cat EC-1 specification.

Specs & values

  • Conditioner or inhibitor concentration: three to six percent

Full service-parts list: Caterpillar 3126B →

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.

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