Motorcycle Maintenance and Oil Information for 1991 Aprilia RX 50 50
If you are preparing to service the 1991 Aprilia RX 50 50, first identify the oil system described in the service manual. The catalog includes two-stroke lubrication products, but that listing does not determine the method of oil delivery or the requirements of a separate gearbox.
What kind of oil does a 1991 Aprilia RX 50 50 take?
This model’s oil listings include DOMINATOR® Synthetic 2-Stroke Racing Oil, INTERCEPTOR® Synthetic 2-Stroke Oil. The record does not verify a viscosity, premix ratio, or oil-injection method; use model-specific service instructions for those details.

