Gear oils according to API standard GL-5
Hypoid gear oils offer the most stable and, above all, most shear-resistant lubricating film of all gear oils and are - as already noted in the name - primarily intended for hypoid-toothed power transmissions. They consist of high-quality solvent raffinates and high-performance additives with a relatively high zinc content.
Although they can be used in older or simple, non-hypoid-toothed gearboxes and axle drives, the high zinc content can lead to oxidation and, when used in manual transmissions, synchronization can be impaired. When in doubt, as always, follow the manufacturer's recommendations and exceptions prove the rule.
If you are unsure, we will be happy to advise you and can then also make recommendations for use outside the manufacturer's specifications based on our wealth of experience.
