rtaphouse

I just got a 2004 Ford Taurus. I need to know what kind of RPM's I should be running at 75mph on the express way?

360ci

This is close to what my 1999 3.0L 2V V6 Taurus runs. Your 2004 has the same drive train and gear ratios. The 25.5" tire measures out to a P205/65R15 size if you were wondering. RPMs are close in proximity to real world driving. Enjoy!

Auto 4 speed
MPH 1 2 3 4 Tire Size Axle Ratio
30 4130 2296 1491 1029 25.5 3.77
35 4818 2679 1739 1200 25.5 3.77
40 5506 3061 1988 1372 25.5 3.77
45 6195 3444 2236 1543 25.5 3.77
50 6883 3827 2485 1715 25.5 3.77
55 7571 4209 2733 1886 25.5 3.77
62 8535 4745 3081 2126 25.5 3.77
65 8948 4975 3230 2229 25.5 3.77
70 9636 5357 3479 2400 25.5 3.77
75 10324 5740 3727 2572 25.5 3.77
80 11013 6123 3976 2743 25.5 3.77
85 11701 6505 4224 2915 25.5 3.77
90 12389 6888 4473 3086 25.5 3.77
95 13078 7271 4721 3258 25.5 3.77
100 13766 7653 4970 3429 25.5 3.77
105 14454 8036 5218 3600 25.5 3.77
110 15142 8419 5467 3772 25.5 3.77
115 15831 8801 5715 3943 25.5 3.77

__________________
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!