On my 150. since i replaced the n75 valve my mpg is now upto about 40mpg -45mpg on a 10 mile run. need to do a service on mine also as only 1000 miles left plus the oil is black. I do get a hiss sound from the turbo which i am not sure is 2 loud really. my dad who is a mechanic seems 2 think is ok but i am not sure still. Guna check the pipes at the weekend i think. plus do an oil and fuel filter change all being well, is anyone in the cheshire area who has gud knowledge on these diesels b able 2 take a look would be greatful
