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- Plano, Texas, USA
You got a new rear differential for free without warranty? Good for you!Mazda noticed it was leaking by the seal, they replaced the seal. I went in for another oil change and they noticed it was leaking from the new seal. Then they realized the rear diff was bad, my Service Tech pitched a fit and I went home with a new rear diff free of charge. ** Disclaimer, I drive an average of 5000 miles and I'm their most frequent customer and have a good relationship with my Service Tech.