SteveA-
A little late coming to this party but agree with what has been posted earlier. No harm, no foul if the moble 1 was drained and Motorcraft reinstalled.
I am a bit concerned at the thought process that if more oil companies start offering a 5W-50 then it is OK to go to their brand of oil just because they make the OEM specified multi-viscosity WEIGHT. There are many other factors to consider in choosing an oil besides weight. Just because 5 other oil companies now brand and sell that viscosity range oil at my local Wal-Mart does not alter my desire to continue to use an oil which is a) recommended by my engine manufacturer who certainly knows my engine needs best b) removes any engine warranty claim challenges and c) is continuously spot checked by Ford by engine testing as part of its vendor oversight program to assure we continue to get an oil and additive package identical to that used for the engine durability certification testing.
As I have said before (IMO) if you can afford your FGT, you can certainly afford to use the Ford recommended fluids. They are to a large extent unique to our specific automobile application.
A little late coming to this party but agree with what has been posted earlier. No harm, no foul if the moble 1 was drained and Motorcraft reinstalled.
I am a bit concerned at the thought process that if more oil companies start offering a 5W-50 then it is OK to go to their brand of oil just because they make the OEM specified multi-viscosity WEIGHT. There are many other factors to consider in choosing an oil besides weight. Just because 5 other oil companies now brand and sell that viscosity range oil at my local Wal-Mart does not alter my desire to continue to use an oil which is a) recommended by my engine manufacturer who certainly knows my engine needs best b) removes any engine warranty claim challenges and c) is continuously spot checked by Ford by engine testing as part of its vendor oversight program to assure we continue to get an oil and additive package identical to that used for the engine durability certification testing.
As I have said before (IMO) if you can afford your FGT, you can certainly afford to use the Ford recommended fluids. They are to a large extent unique to our specific automobile application.