this morning driving to work I got check engine code P0130 and P0133. I know I have 2 new (OEM) O2 censors, so I know it is not it, But one day ago I change OIL and I went and tried Valvoline vr1 racing oil 20w50. well looks like this rig did not like it! On the oil canister specifically stated - not to be use with cars equipped with CAT converters . Any of you have similar experiences?