Hi yingli2288,
Thank you for the donation.
There are nothing to differentiate between engines and the main thing to look for would be the engine identification number. The higher the number value, the newer the engine. Apart from that, you would have to take the dealer's word for it.
If the job was done at the dealer, you can rest assured that they have given you what they promised and the most important thing is that they are providing you with a warranty for the engine.
It is an offence to provide false information so I don't believe the dealer is into that.
There must be some typing error as you indicated the new engine to be 850 k miles. Yes, some engines can run forever depending on the maintenance and upkeep so it is not surprising to have a good running engine at 200 k miles.
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Tuesday, September 22nd, 2009 AT 4:55 AM