The big block in my Chevy truck is enjoying Mobil 1 15W50. The oil has maybe 2000 miles on it. These 496/8.1L engines are known for oil consumption. This oil with a lower temp thermostat stopped consumption totally. I thought I would have still lost a quart or so by now and I could have topped off with a 0W20 to help thin it out for winter, but no.
Kind of seems like a waste to drain out the oil. At what temp is 15w50 going to be too thick? I'd guess cold starts under 30 degrees aren't ideal.
Any acceptable ways to thin it down some? Use the remote start more? Ha.
Kind of seems like a waste to drain out the oil. At what temp is 15w50 going to be too thick? I'd guess cold starts under 30 degrees aren't ideal.
Any acceptable ways to thin it down some? Use the remote start more? Ha.
Last edited: