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This came up in another thread and I'm interested in more info about this. And I apologize if there's already a thorough discussion about this elsewhere that I missed.
I understand, roughly (and basically), that 5W-20 offers ever-so-slightly better MPG, while 5W-30 may offer slightly better engine protection. The owner's manual recommends 5W-20, but if I understood correctly from the other thread, in other countries the spec for the non-turbo 3 is 5W-30. Is this true?
Basically, I just want to know which is best to use. I know there's probably not a huge difference between the two, but for how important oil is to the longevity of the car, I want to be sure I have it right. What are the reasons for switching from 5W-20 to 5W-30? And is it true that in other countries the spec for this engine is 5W-30?
Appreciate any and all insight. If it's worth anything, I'll be switching to synthetic soon as well. And no I don't need a lecture on that, I fully aware of the discussions that have gone on about that.
Edit: Oh yeah, and if possible, please provide sources (or something) if possible.
I understand, roughly (and basically), that 5W-20 offers ever-so-slightly better MPG, while 5W-30 may offer slightly better engine protection. The owner's manual recommends 5W-20, but if I understood correctly from the other thread, in other countries the spec for the non-turbo 3 is 5W-30. Is this true?
Basically, I just want to know which is best to use. I know there's probably not a huge difference between the two, but for how important oil is to the longevity of the car, I want to be sure I have it right. What are the reasons for switching from 5W-20 to 5W-30? And is it true that in other countries the spec for this engine is 5W-30?
Appreciate any and all insight. If it's worth anything, I'll be switching to synthetic soon as well. And no I don't need a lecture on that, I fully aware of the discussions that have gone on about that.
Edit: Oh yeah, and if possible, please provide sources (or something) if possible.