Does it though? Or has the 'recommendation' simply changed? When I enquired of FPV about what oil I should use in my F6, they said that Ford/FPV will use different products over time (depending on cost, and new products that come out). As long as you stay within spec, you're ok. Some dealers use Mobil for servicing, others use Castrol for example. All off the shelf stuff, except for the run-in oil perhaps. ← I can assure everyone this is correct. Trust me. ← ba bf xr6t oil weights are the same for both ford recomend WSE-M2C905-A , R1-340 15W 40 , same as the gas eng, f6?? :spoton: