Edge_2019

I have a 2019 AWD Edge and we started noticing a shudder in the rear end at about 66,000 miles. Dealer wanted $180 just to look at it, plus the cost of repairs. After searching online I decided to replace the rear differential fluid. Dealer wanted $62 for 1 quart of "Motorcraft Disconnect Rear Drive Unit Fluid XY-75W-QL". I paid it : ( I replaced the rear diff fluid and on the very first drive the shudder was gone!! Incredible! I'm now solidly in the camp of people who change their trans and diff fluid every 60k miles! I mentioned SSM 52051 to the dealer but they still wanted $180 just to look at it.