i'd be more worried about the gearbox in it...
it is a stupid idea having a belt running through the oil... cant remember time wise but ford have lowered the mileage on what time to get belt done think its 100k now , no way i would go that distance with out getting it changed,
fella i know sells late vans , any with wet belts he gets changed before he puts em up for sale, none of em ever come back for failed belts its always dpf or adblue problems which is another stupid idea