and the buyers usually prefer to see receipts for the purchase of the fluids etc. The only thing is, that even showing them that doesn't prove anything. Hell, I could buy all that oil and use it on a different car. For all they knew the oil in the car was the factory fill. I agree with rickjordan, just keep notes of it and show them. You'll drive yourself crazy keeping all of the receipts and it can get messy. If the buyer can't be satisfied with that they're either anal or just being difficult to try and get the price down.

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2004 Chrysler Crossfire