Practical guides on engine oils, hydraulic fluids, transmission oils, and how to find the right equivalent for your vehicle or equipment.
Everything you need to know about Caterpillar TO-4 specification — SAE grades, approved brands, equipment compatibility, and how TO-4 differs from UTTO and J20C fluids.
Read more →Complete cross-reference guide for ISO VG 46 hydraulic oils. Compare HM, HV, and ashless formulations across Shell, Mobil, Castrol, Sinopec, and 5 other brands.
Read more →Understand the differences between Allison TES 295 and TES 668 specifications, see approved brand equivalents, and learn which fluid your Allison transmission requires.
Read more →Comprehensive guide to API CK-4 diesel engine oils — how CK-4 compares to CI-4, 15W-40 vs 10W-40 differences, and brand equivalents from Shell, Mobil, Castrol, and more.
Read more →With hundreds of lubricant brands on the market, finding the correct alternative can be difficult. Learn how a professional oil equivalency matching system works and why it's essential for automotive, industrial, and fleet operations.
Read more →Not all ISO 46 or ISO 68 oils perform the same — even if they share the same viscosity grade. This guide walks you through matching viscosity, performance standards, and OEM approvals step by step.
Read more →SAE 5W-30 from one manufacturer may not meet the same API or ACEA standards as another. Learn the key factors in engine oil matching — viscosity, API classification, ACEA standards, and manufacturer approvals.
Read more →Industrial lubricants vary widely in base oil chemistry, load-carrying capability, and additive packages. Find out how to cross-reference oils for gearboxes, compressors, turbines, and hydraulic systems.
Read more →Use our free cross-reference tool to search by product name, brand, or specification.
Try the Oil Matcher