discomania
Well-Known Member
It depends which seal - there are two "seals", an O-ring and a Copper washer.I don't see how dodgy injector seals would impact diesel getting into the oil, a damaged injector might if it was sticking open but you'd notice this in the way the engine is running and what's coming out of the exhaust surely?
A fairly common issue on the TD5 engine really, the O-ring seals between the fuel rail and the injector, if damaged or scored diesel can blow up past them and into the top of the head.