The Suzuki Intruder's rear end requires SAE 90 gear oil. This oil is specifically designed for use in gearboxes and differentials, and it provides the necessary lubrication and protection for the gears and bearings. SAE 90 gear oil is relatively thick, which helps to reduce noise and wear in the rear end.
It is important to use the correct type of gear oil in the Suzuki Intruder, as the wrong type of oil can damage the rear end. For example, using a too-thin oil can cause the gears to overheat and wear prematurely, while using a too-thick oil can slow down the shifting and make it difficult to find neutral.
The Suzuki Intruder's rear end holds approximately pints of gear oil. When changing the gear oil, it is important to drain the old oil completely before adding the new oil. It is also important to check the oil level regularly and add oil as needed.