i had a new turbo fitted in feb by vauxhall as mine was blown, it was smoking and spitting oil out the dumpvalve. so i fitted the restrictor bolt on the new turbo and iv done 1700 miles on new turbo and its started spitting excessive amounts of oil out the dumpvalve again. am i right in saying the oil seals are blown again after just 1700 miles?! i hope to god its not. is vauxhalls work warrentied at all? coz im gonna be seriously pissed if turbos gone allready!