yes the new 0w-30 kinda scares me theres fuel savings but that dont help if your engine wear comes faster...when i was running a 06 saturn ion i used 5w-30 mobil one extended life i drive around 30-40k miles a year mostly highway and it hasnt changed wish it would
none the jetta i drive now because of it being 5w-40 my choices are limited if i want good engine life and fuel economy i go with shell rotella T (very good oil no horsepower) since iam a speed demon i go with the factory oil castrol syntec very good oil gives the engine life and the mpg is pretty good....
...another to check out my buddy uses royal purple and amsoil he swears by them ...beats me iam perfectly happy with syntec!