The lubrication from the lead was only beneficial on the face of the exhaust valves and seats. That is why hard valve seats give better life than the softer material in the head. Far as valve guide lubrication, it comes from the engine oil coming down the guide, not the gasoline. Adding a bunch of stuff to gasoline will only add to the carbon buildup. IH sent out several service bulletins back in the day, recommending the use of unleaded gasoline to help overcome build up on valves AND the use of low ash oils. This was prior to IH introducing their own low ash oils. Problem was it was very difficult to find. Some oils designated for LP use were very low in ash at that time.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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