I am wondering has anybody run this in a kia besides the 5w20. I am just wondering because my 04 chevy colorado loved AFE 0w30 and ran much quieter on it. I am wondering if it would remedy loud cold starts on my kia. I saw running a search someone had run it in an elantra touring edition with a good UOA. In Arizona I know it doesn't get cold up here, but after some reading it seems that 0wxx seem to benefit both in cold starts and at operating temp. I currently commute 82 miles round trip which is mostly highway and do some short trip driving to run errands.