Does anyone know if the 3.0 V6 Essex engine used in a P100 early circa 1980's would have originally run on 85 or 87 RON fuel?

 

the older type v6s run on old 4 star but tbh if its been runnimg on unleaded since with no lead addditive the valve seats will be punched in ive found this on alot of older cars ive had as no1 rums the additive etc

 

no matter what anyone says it will run on e10 with lead additve as ive run rober sd1 and xr4is etc like this with no issues at all.. the shell v power u can use but you will notice no differnce at all 100% not unless your going to rev nuts off it sideways all over lol