Gene, if the stop leak would end up at the bottom of the engine block, would it not just be at the right place to stop an O-ring leak? I very well know that they can leak. My engine showed the same symptom and it turned out that there even was a hole rusted through the sleeve wall were the O-ring sits. Of course, I discovered the hole in the sleeve only after tearing the engine down. The leak was so minimal that I had to pressurize the block before the leak showed up. Crud in the bottom of the block prevented it from leaking worse and it only leaked when the engine was hot. I did, as you suggested, pressurize the block WITHOUT pressurizing the radiator. (I removed the radiator, blocked the lower outlet of the block and fabbed a coupler to the upper outlet to receive my garden hose.)
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Today's Featured Article - Maintaining Rubber Tires - by Staff. The broad use of rubber tires on farm tractors and machinery has resulted in a great saving in both time and operating costs since the time of steel wheels. There are, however, certain basic fundamentals in the care of tires that should be followed carefully if the owner is to derive maximum benefit from his or her investment. First and most important is to maintain proper pressure for the work at hand. Your best guide to proper inflation is the operator's manual or instruction book tha
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