Unleaded vs. Premium gas, does it make a differnce?
My father inlaw suggested I run Premium gas when towing the TT. Makes sense but not sure it makes a difference, any thoughts?
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Actually it makes maximum horsepower at 5,000 RPM.
At 1800 rpm you make about 140 hp not the rated 350+ hp at 5000 rpm.
That may be true. Not disputing your numbers, but ours turns about 1800 / 2000 on flats overpasses / rolling hills. Just went over two high bridges in Jax Fl in tow haul mode and on cruise, 62 mph. Tach went to 3000-3200 area, stayed @ speed.
Never seen tach over 3200 unless we are caught on an on ramp and have to kick it, but also never been in big mountains. Can't see it getting anywhere near 5000. Must be the tranny / tow haul working.
