Engine oil provides cooling ... Engine builders have included SAE 10W-30 in lube recommendations since API CJ-4 was introduced in 2006. It hasn’t expanded much, but use of SAE 10w-30 is expected ...

Synthetic blend SAE 10W-30 or 10W-40 diesel-engine oil may offer extended-drain capability, enhanced engine cleanliness and excellent wear protection in the hottest summer heat and the coldest win ...

Such competition, of course, inspires questions of whether O'Reilly's in-house motor oil is any good ... including standard ...

SAE 10W30 will sync with the components used in the vehicle. Any higher/ thicker grade(10w-30), might have constraints in the oil flow through the tighter tolerances maintained in the construction ...