It's time for my first oil change with my swapped LS motor, which weight oil is everyone using? Is it the same as my old D16?

 

you should always use the thinnest possible that you can get away with before you start burning it. This will keep your clearances as tight as possible. thicker oils tend to wear large clerances. With that being said, use 5w-30. There is 0w-20 out now, but i dont know if b series clearances are too big for it, you could try it, but if you get a bunch of clacking and oil burning, step up a grade.

 

ok, i already put some 10w30 in my LS, is that bad? Also, what weight oil should I use when I turbo, same?

 

5w30... for turbo, i suggest a heavier weight oil because they're thicker and won't burn due to thinning out as quickly.

 

Ok so let me get this straight. I should use 5w30 on my NA LS and when I turbo I should use something like 10w30. Also, with the 10w30 in my NA LS, what negative effects could happen?

 

10W30 is perfectly fine for your LS. N/A or turbo

and since your in arizona i would recommend you stick with 10W30 from now on.

 

i say use a 10w-30 oil. the 10w-30 dino is better than the 5w-30 dino. for one, the 5w-30 dino isnt shear stable. too much viscosity improvers causes it to thin out fast. my favorite conventional oil is chevron supreme.

and 15w-40 if your going turbo.

 

go to http://www.bobistheoilguy.com

great site. have learned a lot there

 

cool site.