klein444
"Why are you running straight 30W oil instead of the recommended 10W-30?"
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10w-30 is not needed where I live.
10w-30 is "recommended” by Kohler themselves for temps down to 10 degrees f, -20 degrees C. My operating temps are no where near that cold and are closer to the upper end of the range where the 10w 30 would be getting close to being 30 anyway at 50 to over 100 degrees f as it is here in Texas in the mowing season (no snow work here).
I am well aware of the lifter issues and the valve push rod bending issues reported to be caused by heavy single viscosity oils.
Also I have seen the waxy residue left in engines by using multi- viscosity oils when there coils that make the oil multi-viscosity breakdown and create a wax like slug in an engines oil gallies.
I don’t want that stuff in my engines, any of them no matter who says to put it in there, I have been running 30 through 2 seasons now in my North Texas Kohler Engine with out any signs of lifter or push rod problems, no clicking or clacking.
The last oil change at 50 hours was a bit darker yet clear and flowed freely out of the engine. This time next year the engine will be out of warranty.
I am not running a viscosity outside the recommended oils range I'm just not running multi-viscosity oil and I feel better doing so not having the non-lubricating additives that make multi-viscosity oil work in the engine.
I have been running the same oil in all my engines for 3 decades with no oil viscosity related problems ever.
Bottom line is, I trust it to do its job and do it well in my climate.
I hope this helped show why I run single viscosity oil.
Bob