How do you top up gear box oil on Volvo 940?

To top up the gearbox oil on a Volvo 940, first locate the transmission dipstick, usually found near the back of the engine compartment. With the engine running and warmed up, pull out the dipstick, wipe it clean, and reinsert it to check the oil level. If it's low, use a funnel to add the appropriate Transmission Fluid through the dipstick tube, ensuring you use the correct type specified in the owner's manual. Always check the level again after adding fluid to ensure it's within the recommended range.