hi all, well i am going to give the bora an oil change this weekend as i really dont believe in all this long life oil crap! now the oil in the car at the mo is 0-30w Castrol long life stuff. I have bought some mobil 1 oil for it but it is 0-40w. Will this be ok for the car as i really dont want to put the wrong stuff in as my mate did once in his Toyota and it fooked it right up! Any advice peeps?? i have called VW but they were very un-helpful and sounded pissed that i wasnt getting the oil changed at there's! nobs!

oh, the car is a 1.8T 03 Bora. cheers!!