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aerohead, Luckily for me my winding downhill drive to town is really a set of up and downs plus curves which mean I rarely have to brake in the Silverado when coasting. The changes tend to keep it in range of the speed limit. This is all 35-45 mph posted.
The Subaru on the other hand has to be driven on the same route because it just has too much rolling resistance. I don't know why.
These winter days I'm getting 18 mpg average with the Silverado and 22.5 mpg with the Subaru.
When I bought the Silverado the seller said it got 15 mpg. Since then I've replaced many components, including wheel hubs, and am using lower visc synthetic oil. And my driving habits are much improved. Aero mods are coming. PCM programming is coming.
I'm going to try to catch the Subaru's mileage figure, as a first goal.
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