It is rather hypocritical of many here on this board HAVE themselves including 53 stude have questioned oil and filters. Yet when someone else does this they are more or less belittled. If any actually read my post they would see that I USE Supertech and have done so off and on for many years. I am not trying to make anyone's blood boil but I DO NOT like for anyone to make an accusation against me especially when that person has had their OWN questions about a product. I am not COMPLAINING about Supertech but just questioning if they are making some or maybe all of their oils to a lesser quality. It seems that after WD was bought out that things started changing. Prices increased and PDS changed. Did the buyout have anything to do with it? I don't know but for those here to make snide remarks is uncalled for.This type of questioning goes on on this board all the time. That is BASICALLY what this board does on many of its topics. And yes I did get the MSDS for Supertech FS HM 5w30 and the CAS# can be considered part of spent oil but it doesn't distinguish whether or not is actually is.And also, I don't stay on the board,I don't post a lot. I have bern a member here for many years and have only I think a little over a thousand posts and considering how people get treated,it is a wonder anyone posts anymore. Now before someone says I am a victim. I am in no way going to let someone here make me a victim. I do however consider decency and respect to be something a person should be treated with but it seems some here do not know their defenition.