Posted by IanC on November 15, 2015 at 16:47:28 from (69.212.231.119):
In Reply to: Tractor oils. posted by John Allicaseover on November 15, 2015 at 16:03:54:
The additive is / was ZDDP (zinc dithiophosphate). It was removed from oil because it effects the emissions equipment of current diesel engines (most tier 3, and all tier 4). According to the API (off their WEB site, OH NO www.api.org) the new non ZDDP oils are backwards compatible, but you may have to modify your drain intervals. The zinc loss effects flat tappet engines which means almost all older tractor engines. We have seen camshaft failures, but they were in over the road trucks. The ZDDP is available in the aftermarket. Parade tractors MAY not need it, but if it is a working tractor I would spend the money on a oil that still has it such as CENPECO, they still make a Series III oil (old spec CI-4 or older), as well as one that is compliant with the new "CJ" spec.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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