I towed my 15' Glastron pleasure boat with 90hp motor behind my '92 Silverado 2WD with V6 and man trans yesterday. There were ALOT of steep hills and some 60 mph roads. I was surprised to find that I averaged 17mpg round trip to the lake. Total mileage was about 162. I filled up before and after the trip so the mpg would be for towing only. Normally, I get 20mpg without towing.
Is anyone doing better than this? If so, please post the specifics because at this point I'm considering buying a used Toy Tacoma 2WD in the interest of getting better mpg.
WW in TN