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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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