Went to have my oil changed at a 5 Star dealer (Atlanta) that keeps SRTs on the lot. They put in the wrong oil (5w-40 I think). When I brought it to the service manager's attention he took it to the mechanics and they said they could use same oil as all Hemis. I showed them the owners manual and my oil and filter were promptly changed. No way they were getting away with that one and I have the prepaid oil changes which we have to pay extra for since we use synthetic oil. I still don't like the fact the wrong oil has been in my engine........BE CAREFUL!!!