Dorman products are great. As with any replacement part, a lot of times people do not replace the related parts along with the main part. Old related parts will put extra stress on the new part and cause premature failure regardless of the brand name.
I have had the Dorman on mine for 5 years and running, it has been great with no leaks. I also put one on my 25 f-150 on the first oil change. I have sold many of these and have never had a customer come back and complain!
I was in the first 10 or so on the preorder list, and all I ever got was the email about the measurements. I can find other places to spend $800 who care more about customers! Glad to hear you like them though!
The oils changes are simple on the 2.7, as there is a hole to drain down. All you need is a drain plug like the dorman where you can just open it. I did have it on when I had the plastic bumper and it fit great.
It's like a filter you can change it weekly if you want, and it will not hurt anything. You must remember though that you are throwing money at replacing something that is perfectly good with plenty of life left in it.
Wix makes the micro guard filters in the red box, the other company makes the micro guard select in the green box at O'Reilly. I've always just used the motorcraft on my 2.7, but I have looked at the micro guard and it is also made in Brazil like the motorcraft, so I'd bet they were exactly the...