Re: Cummin 12 valve Square Body Suburban MPG?
Ah. That makes sense then. I got 17 with a 6.5 turbo, and I always thought of the 6bt as more fuel efficient. But I don't typically drive as fast.
Thanks for the info.
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1989 Suburban 1500 4 x 4
1989 BMW 325i
1945 Willys MB Jeep
1959 Triumph TR3A
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