A grade is not a full specification
Two fluids may carry a similar viscosity but use very different additive chemistry. Transmission performance can depend on friction characteristics, seal compatibility and component materials.
Drain interval is also specification-dependent
OEM charts commonly tie the approved fluid type to service severity and change interval. A longer drain interval is only meaningful when the approved lubricant and operating condition support it.
RFQ information
Provide transmission/axle model and OEM lubricant requirement whenever possible. DHG can then source against the actual specification rather than guessing from SAE grade alone.
This article is general technical information and is not a substitute for the equipment OEM manual, lubricant manufacturer recommendation or site-specific engineering review.