http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/Mobil_Synthetic_Equivalent_for_15W-40.aspx

http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/Mobil_1_Synthetic_ATF_Mercon_Approvals.aspx

"Beginning in July 2007, Ford will no longer approve Mercon Fluids and will recommend Mercon V for Mercon applications. Initially Ford did not think Mercon V was interchangeable with Mercon Fluids. But now agrees with ExxonMobil, that Mercon V fluid can be used in Mercon applications."

Lot of interesting questions on the left with answers so educate yourself on synthetics and enjoy. HALLEUJAH! GOOD GOLLY MISS MOLLY! They make a 5W40 to take the place of dino oil 15W40. :ylsuper: