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But then how much gas are you burning to go 70mph with say 1:1 at 3,000rpm versus over drive and closer to 2,000rpm?
I tested it once, in my my six speed firebird it made about 4mpg to 5mpg difference. I noticed I went from full to 3/4 a tank in less than 100 miles and I was like "that's enough testing for that". Went and filled up saw the catastrophic loss of fuel economy and didn't do that again.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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