I remember the cautions on 10w-40 also. Said that the additives required to get that kind of a viscosity span were excessive and that there wasn't enough oil left for proper lubrication.
Course that was then and we are here now. If I can run 5W-40 Rot. T full sin in my Cummins diesel with the blessings of Cummins (I asked them) then things must have changed.
So I don't know what to say. What's the oil worth to you and what's the engine worth? Worth the gamble? Your money, your equipment.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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