CAT Diesel Engines | Engine Oil Specifications

CAT Engines

Caterpillar heavy-duty diesel engines. Oil specifications, ECF-3 requirements, and drain intervals for C-series and legacy 3400-series platforms.

Engine Pages


15.2L

C15

ECF-3. 15W-40 CK-4. No FA-4.

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12.5L

C13

ECF-3. 15W-40 CK-4.

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14.6L

3406E

Legacy — CF-4/CG-4 era. CK-4 backward compatible.

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CK-4 vs FA-4OEM drain intervalsBest oil for semi trucks

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