Earlier I posted a question about whether or not use GC 0W-30 in my wife's 04 Camry. Well, I made coffee and sat for a few hours and did my homework, I decided to go ahead and use GC 0W-30. After I dropped the elves in and turned the key, the car sounded really good. And then, something interesting happened, the car got really quiet, I mean like never before. Wow! I took it out for a test drive and it runs great. I want to see how long it will stay like that in her camry. She does a lot of city driving in Philly. But, with its additive package, I think she will be okay!