paul its a better option as the head may suffer from oil stavation so this is generally perfered
but as for the oil filter idea, thats just pointles as if you think about what its doing,,,,,,,, its filtering before the turbo so in theory what its gonna do is create a blockage and still starve the turbo OR the bit tats gonna kill the turbo aint gonne get in it due to the pipe being much smaller anyway
its just another pretty thing to add to a engine and a thing for turbo companys to use for when they wanna get out of warranty claims
ive never ran one and ive also ran my cossie engine with no oil registering on the dip stick ( and this is a 7.7 litre sump) and the turbo is still fine,,,,,,,, engine was erm,,,,,,,,,,,, anyway the turbo was fine and i never used one