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If you want to buy Mobil 1 5W 30 oil cheap, go to Walmart. You can get the 5quart bottle for $23. You will need 2 since the F takes 10 quarts and the filter is around $6-7. For less than $60 for a synthetic change on the F with Mobil 1 is a steal. Better than $150 at the dealer or an outside oil change shop.
 

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I would break it in with one regular oil change first to get everything to seat. You might as well wait until after your second oil change which is the free 6 month/5000 mile change from the dealer than do the synthetic. No sense in wasting money on an oil change when you can get one for free from the dealer. One change with regular oil is not going to make your F last any shorter or give you that much noticeable power increases. Do the factory oil 6 months/5000 miles, then have the dealer change it and do another 6 months/ 5000 miles on regular oil, then at 10,000 miles or after one year if you don't put that many miles on per year put in the synthetic. I use synthetic Mobil 1 and since I put less than 5k on a year, I change it once a year. Every 6 months seem like a waste when you are putting only 2k miles a year on synthetic oil.
 
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