Question about 2007 Hyundai Sonata Limited Sedan

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Oil change intervals

Now the book in the car says oil changes are to be done at 7.5k but dealer is pushing for 4k and dealer says hyundai does not recomend synthetic oil ?. sounds like dealer is trying to make some extra cash .my old elantra with 177k i didnt even change the oil just the filter. well it used about three quarts per 5k. Ok just call me cheap but i was always changing the oil in adding it so much. kinda like a detroit diesel they used it up almost as fast as ya put it in .

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I personally hold synthetic oil as the high-standard of lubricants. However quality varies. Without completely flushing I would not recommend use in a high mile engine.
"ordinary oils" are far better than they used to be, but begin to break down substantially after about 2500 miles. No dealer wants your car to last beyond the warranty period. They sell new cars! Changing your oil & filter at 3000 miles is reasonable, and not too often. If you are using quite a bit of oil, take care of all external leaks you can. It will help a lot. You can't extend change intervals because of oil consumption. The filter must be serviced regularly or you will cause more internal wear.

Posted on Jan 03, 2009

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