CO2 is directly related to fuel economy (no filtration of it) which is why diesel do better than gas. OP has a 40 years old diesel truck though, I wouldn’t expect it to be getting that great fuel mileage, especially not if they’re from the US.
Fair enough, older cars absolutely have worse fuel economy. I wonder how much this is offset by US trucks growing in size and weight though - a modern gasoline truck may even have worse fuel economy despite 40 years of advances. Although that’s not a high margin to clear to be honest.
CO2 is directly related to fuel economy (no filtration of it) which is why diesel do better than gas. OP has a 40 years old diesel truck though, I wouldn’t expect it to be getting that great fuel mileage, especially not if they’re from the US.
Fair enough, older cars absolutely have worse fuel economy. I wonder how much this is offset by US trucks growing in size and weight though - a modern gasoline truck may even have worse fuel economy despite 40 years of advances. Although that’s not a high margin to clear to be honest.