Originally Posted by sixpac
+1 I run synthetic moblie 1 and change it every two months or 2500k miles whatever comes first..
If you change your oil that often, and at such low mileage, then you should consider using a semi synthetic such as Motercraft or comparable, and save about 15 bucks at each oil change. You are not gaining any wear protection at all by using full synthetic and changing it every two months or 2500 miles. The purpose of full synthetic is to extend the length of the oil change interval, or for extreem usage, such as pulling a trailer, or race type conditions.
I use full synthetic or semi synthetic; whichever is on sale when it's time to change the oil. I go with what Ford has told me in my owners manual; using Motorcraft semi-synthetic, I can go as far as 8 to 10K in the Mustang (the newer engines have a deaper oil pan to help with the longer oil change intervals. I have 53K on my current Mustang; I have 223K
on my 2005 F150. Each gets full or semi synthetic with a Motorcraft filter, and gets their oil changed between 7500 and 10K intervals (10K with full synthetic). I've had each since new, and the truck is running like the day it was bought. The Mustang runs like the scalded pony it is intended to do.