PISTON 8P1186 - Caterpillar

Every attempt is made to provide accurate, up to date information. By use of this document, you agree that Caterpillar Inc. is not responsible for errors or omissions.
These recommendations are subject to change without prior notice. Contact your Caterpillar dealer for the most up to date recommendations.
Note: Note: Refer to the latest edition of Special Publication, SEBU6385, "Caterpillar On-highway Diesel Engine Fluids Recommendations" for additional information. Contact your Caterpillar dealer in order to confirm that you have the newest recommendations for fluids.Note: Instructions for the installation of the filter are printed on the side of each Caterpillar spin-on filter. For filters that are not Caterpillar filters, refer to the installation instructions that are provided by the supplier of the filter.Diesel Engine Oil
Cat DEO (Diesel Engine Oil)
Cat oils have been developed and tested in order to provide the full performance and service life that has been designed and built into Cat engines.Due to significant variations in the quality and in the performance of commercially available oils, Caterpillar makes the following recommendations:
Cat DEO (Diesel Engine Oil) (10W-30)
Cat DEO (Diesel Engine Oil) (15W-40)
Cat DEO-ULS (Diesel Engine Oil - Ultralow Sulfur) (15W-40) (SAE 10W-30 is only available in bulk quantities)Note: Cat DEO-ULS and Cat DEO multigrade oils are the preferred oils for use in all Cat on-highway engines.Note: For optimum engine system performance of DPF equipped Cat diesel engines, the use of Cat DEO-ULS is strongly recommended. For optimum engine system performance of DPF equipped Cat diesel engines, the use of ultralow sulfur diesel fuel (ULSD) is required.Commercial Oils
Caterpillar does not warrant the quality or performance of non-Caterpillar fluids.
Note: Non-Caterpillar commercial oils are, as a group, second choice oils. Within this grouping of second choice oils there are tiered levels of performance.Caterpillar developed the Engine Crankcase Fluid (ECF) specifications to ensure the availability of high performance commercial diesel engine oils in order to provide satisfactory life and performance in Cat diesel engines where recommended for use.There are three current Cat ECF specifications: Cat ECF-1-a, Cat ECF-2 and Cat ECF-3. Each higher Cat ECF specification provides increased performance over lower Cat ECF specifications. For example, Cat ECF-3 provides higher performance than Cat ECF-2 and Cat ECF-3 provides much higher performance than Cat ECF-1-a. After Cat DEO-ULS and Cat DEO, commercial oils that meet the Cat ECF-3 specification are preferred oils for use in Cat On-highway Engines. Oils that meet the API CJ-4 oil category requirements are compliant with the Cat ECF-3 specification.Commercial oils that meet the requirements of the Cat ECF-1-a