Is it me or have recent emissions laws resulted in the motorist being lined up for a nasty surprise? I refer to the EGR valve setup on many Euro IV engines. This allows spent gases to be recycled back through the engine to lower final emissions. In itself perhaps a good idea but it seems many engines also vent the crankcase to the same inlet manifold and the combination of soot from the recycled gases and small amounts of oil from the breather mean that over time the inlet manifold, intercooler and turbo get nicely gummed up, particularly on a turbo diesel engine. Why don't manufacturers at least fit an oil catch tank to prevent oil from the breather entering the inlet manifold and thereby stop the creation of the sludge in the first place? Would you recommend this as sensible thing to fit as an owner who can see the problem is likely to develop over time and wants to take action now rather than wait for the inevitable and no doubt expensive alternative?