[quote author=bbf2530 link=topic=152285.msg3261270#msg3261270 date=1249328646]
I agree with roaf. With modern engine and oil technologies, a 6 month/7,500 Normal Service
OCI is perfectly acceptable. That goes for Conventional, Synthetic Blend or Full Synthetic oils. Otherwise, Ford would not recommend it.
In fact, the first Ford US passenger car to adopt the 7,500 Normal Service OCI was the 2007 model year MKZ, when the new 3.5L engine was introduced. With the 2008 model year, the rest of the Ford lineup/engines adopted the 7,500 mile OCI.
If you are not comfortable with 7,500 mile OCI's, use the Severe Service OCI which is 6 months/5,000 miles. In the end, it is all a matter of personal preference. So use any OCI (up to 6 months/7,500 miles) you feel comfortable with. There are even some people who still use the old
3 month/3,000 mile OCI.
Bottom line is that considering the average annual mileage driven by US drivers, many drivers will need to change on the time interval (6 months) before they ever hit the 7,500 mile mark anyway.
I also agree with biggee. :lmao:
Whatever you decide to do, good luck.
Of course you agree with me because I am taking the words right out of your mouth from the last time I asked this question. If anything I should have gave credit to you.