type of oil

Hey everyone, Recently purchased a mint condition 2005 Sportage Crdi here in central America. Unfortunately, the CRDi version of the sportage never made it to North America, hence there is very very little information . To add insult to injury, the manual is in Korean . My question is, which...

Ready to change oil in my 2009 Sedona that I bought w/ 150,000 miles last year .... The cap on the van says to use 5W 20 in it ... but the manual says 5W 30 ... Any experiences that would make a difference ... I live in winter country (USA) where it does get to 0 (F) or below & up to 90 (F)...