My sister has a 07 Grand Marquis LS and the oil change light comes on after 3K miles..She uses 5W20 Full Synthetic Motorcraft Oil so there no need to change it at 3K miles. She wants to change it at 5k miles like the other 3 Panthers we own..The dealer claims there is no was to reset the computer for the oil change to 5K miles..That doesn't make sense to me..Is the dealer right?..Even the dealer recommends 5K mile oil changes even with just the Synthetic Blend.
Our other cars are older so don't have 2 deal with that.
Thanks in advance.
Our other cars are older so don't have 2 deal with that.
Thanks in advance.
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