Originally Posted by
99F150
Does Ford put a special break in oil? The oil in the fill cap and on the dip stick has a yellow color to it.
Not according to the fellow that worked in the ohio engine plant that was on here some time ago. He said they used the synthetic blend oil. The 4.0l SOHC doesn't have a flat tappet cam or anything that would require special oil or care during break-in.