This video will show you how to drain and refill the rear differential fluid on the 20142020 Acura MDX SHAWD models. Acura recommends you do this every 15k miles. DPSF fluid and plug washers were purchased in a kit from Bay I will provide a link below and also a link to the quart pump found on Amazon.
Quart Sized Fluid Pump: https://amzn.to/3rpm6yV
DPSF Fluid and Washer Kit: https://www.ebay.com/itm/224754522856...