hey guys, im hear to let ya in on a little secret of mine. If anyone is looking for a great oil (proven best in MANY tests) go to http://www.archeroil.com/ It is a little pricy, but well worth it. I have been using it on and older engine that wasnt in very good shape, when I took it apart, the heads looked like they have been hot-tanked. I sent in a sample for an oil analysis. I dont have the specs for you now, but they were much better than any other oil I have ver used. I have talked with a dealer, and he says there is no better oil. John Deere oil come closest to it on the analysis, but wont beat it. CHECK it out guys. It may save you a lot of hassles some day. Please let me know if any of you are using it now or are interested in using it.