Quaker State 10w-30. Used Quaker State 10w-40 in my JD H for 25 years, regular oil & filter changes but .0002" wear on the crank bearing journals, less than .001" wear on cylinder walls, almost no wear on engine bearings. This is on a tractor that was USED, not shown!! Can't get any better than that. There's many good oils out there, but I KNOW this one works. I use Quaker State in everything, changing viscosity per the makers manual. Paul
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Today's Featured Article - Piston Ring Removal and Replacement - by Chris Pratt. Piston Ring Removal and Replacement - Replacing rings is a fairly easy process to stretch the engines usability between major rebuilds and cut down on that blue smoke and high oil consumption. Frequently, replacing only the rings is not advisable because by the time you do the teardown and measurement of the components, the pistons are often beyond the manufacturers specification or something else you find will signify the need for a major rebu
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