I think oil is not a large issue. However the filter itself can lead to liability issues if it fails.
Interestingly when my Subaru WRX was under warranty and I used dealer occasinally for $25 oil changes (conventional) the dealer would ask if I had synthetic that most WRX/STI owners would bring in. I just used bulk fill anyway.
I remember my first new car had "free" oil changes for life(of dealer apparently) just not filter. They would charge $7 for honda filter or you could show with your own. I did get suckered a few times into "lubricate the brake slides" for $30. I think that was the scam to get their money back.
Interestingly when my Subaru WRX was under warranty and I used dealer occasinally for $25 oil changes (conventional) the dealer would ask if I had synthetic that most WRX/STI owners would bring in. I just used bulk fill anyway.
I remember my first new car had "free" oil changes for life(of dealer apparently) just not filter. They would charge $7 for honda filter or you could show with your own. I did get suckered a few times into "lubricate the brake slides" for $30. I think that was the scam to get their money back.
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