Kia recommends 5w-20 and that's good enough for me 'cause they warrant the engine for 10 years 100,000 miles if I use the oil they recommend.
It helps too if you know that several other car manufacturers have been recommending 5w-20 since 2001 -- like Honda and Chrysler.
You can find a lot of negative discussions about 5w-20 on oil company sites...and, of course, they have a better oil you should use...imagine that...LoL!
Last edited by ForteSX2.4; 01-18-2010 at 11:40 PM.
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