read this on the Mustang Club of America forum:
ford changed my oil. I had synthetic put in and they set my next oil change in 10,000 miles so listen up guys this guy tells the truth. Reminder never mix different brands of synthetics. they turn to acid and eat your engine.
ford changed my oil. I had synthetic put in and they set my next oil change in 10,000 miles so listen up guys this guy tells the truth. Reminder never mix different brands of synthetics. they turn to acid and eat your engine.