Lubricants with added corrosion and oxidation inhibitors, suitable for moderate loads.

You will often see this standard cited in industrial machinery manuals—for example, in manuals for gearboxes—recommending oils like Agip Blasia SX 320 that specifically meet DIN 51517 T.3/CLP requirements. ORSO - MASCHIO GASPARDO S.p.A.

Must pass the FZG gear test (typically a failure load stage of 12 or higher) to prove protection against scuffing and wear.

Lubricants meeting this standard must satisfy rigorous criteria to ensure equipment longevity: