Time for my first oil change. Went to walmart and they carry both ford motorcraft 5w20 synthetic blend and Mobil1 extended performance fully synthetic 5w20. I have ben hearing alot of info about you should not use fully synthetic like a mobil1 because of the tight tolerances and the variable valve timing in the 05 up mustang. It may mess with your timing and stuff like that because fully synthetic is too slick. They are saying to stick with motorcraft because is in designed for the car and will work better. What is really better for my car? I am not going to drag my car or drive it very hard. It is basically a show car that i just cruise around town in and a fun in it and maybe street race a couple of cars once in a blue moon.
I want the best protection possible but dont want to mess my engine up because of an oil issue? What oil do you guys use and have any of you had any promblems with fully synthetic oil like Mobil1.
I want the best protection possible but dont want to mess my engine up because of an oil issue? What oil do you guys use and have any of you had any promblems with fully synthetic oil like Mobil1.