another oil question..sorry i know there have been a lot

[md1198p]

i am getting a vortech installed next weekend on my 99 gt. i use regular oil now, and am gonna switch to synthetic. i live in nj, so its real cold in the winter, and real hot in the summer. what oil should i use? mobile 0w-20 all year round, or switch to a little heavier in the summer?

 

[Mike98GT]

if the climate changes dramatically through out the year, it is better to change your oil to suit the climate