Originally Posted By: Tegger
GDI, 0W-20, and other seemingly-useless artifacts are intended to raise automaker CAFE scores in the EPA's mileage drive-cycle and nothing else. CAFE-applicable gains are not noticeable to the consumer in daily driving.
In certain vehicles over the years, we've seen marked improvements in fuel economy. Trucks are a good example. Others, we've seen little to no improvement, as you mention.
Emissions improvements, however, over the decades, cannot be denied. With respect to new technology, the automakers will get the DI issues worked out. I've been told that the sky would fall many times, like when points were eliminated, when emissions technology was introduced, when lead was phased out, when carbs disappeared, when A/C switched to friendlier refrigerants, when airbags were introduced, and so forth. I'm not going to rush out to buy a DI engine, but I'm sure as heck not worried that every gasser will be GDI in six months and none will work correctly, either.
GDI, 0W-20, and other seemingly-useless artifacts are intended to raise automaker CAFE scores in the EPA's mileage drive-cycle and nothing else. CAFE-applicable gains are not noticeable to the consumer in daily driving.
In certain vehicles over the years, we've seen marked improvements in fuel economy. Trucks are a good example. Others, we've seen little to no improvement, as you mention.
Emissions improvements, however, over the decades, cannot be denied. With respect to new technology, the automakers will get the DI issues worked out. I've been told that the sky would fall many times, like when points were eliminated, when emissions technology was introduced, when lead was phased out, when carbs disappeared, when A/C switched to friendlier refrigerants, when airbags were introduced, and so forth. I'm not going to rush out to buy a DI engine, but I'm sure as heck not worried that every gasser will be GDI in six months and none will work correctly, either.
