Used to run that engine in a 91 taurus that saw oilfield neglect all its life. If memory serves it wasn't too picky on oil choice or OCI
( didn't get too many of those anyhow), but it ran exceptionally well on Havoline straight 30 ( even when it went over 150k miles) . If M1 suits you go for it I say. It will work.
btw I hope it doesn't have the old school taurus tranny in it...
btw I hope it doesn't have the old school taurus tranny in it...