I JUST GOT AM O5 GT MONDAY, LOVE THE CAR! I HAVE HOWEVER HEARD A NOISE COMING FROM THE REAREND GEAR (I THINK) I KIND OF A GROANING NOISE ONLY NOTICE IT WITH IN ABOUT 1 MINUTE OF START UP. aNYONE ELSE HEARD THIS? ANY IDEAS? ALSOWHY IS FORD RECOMENDING 5-W20 WEIGHT OIL?

STILL BREAKING THE CAR IN AND HAVE ONLY HAD IT TO 105MPH, AWSOME RIDE THOUGH.

 

Most 04 & 05 new import and domestics are using 5W20.... Partially for fuel economy and partially due to closer engine tolerances.

 

Turn your caps lock off.