The tolerances in engines have changed over the years and the viscosity of oil has too. That old 40 w that we used in clunkers back in the 60's doesn't work in these new modular engines. The oil is supposed to suspend the dirt and carry it to the filter, so it does not leave it stuck to parts inside the engine. Oil filters are much smaller than they used to be and the oil change intervals are longer nowadays because the oil doesn't create the sludge like it once did. I did auto repair for more than 50 years and most oil filter leaks were operator error. Most of the time they didn't check to see if the old gasket stayed stuck to the engine. We used whatever was available, unless the customer specified something else. Fords with Mighty filters are the only ones I saw filters explode on. Oil is the life of your engine, Keep it clean.
