Well as many of you know simply by upping your tire pressure you can lower your rolling resistance. But some people really never thought about it...
So I had the opportunity to do a before and after fuel economy study on two Honda odysseys. An 2008 lx and a 2002 ex, now since the 2002 ex has VCM its FE is much better.
2008....36psi = 15.7 mpg (driven by three people, who had never heard of Hypermiling)
2002....36psi = 21.7mpg same driving
Then I had the chance to check the tires and I "accidentally" filled them up to 42psi...the max sidewall is 44 so I think that 42 is a safe level.
AND...the results are in..after about 5 fill ups per van the averages are below.
Same driving habits and same exact routes.
2008....42psi = 18.37
2002....42psi = 22.67
And just last week I cleaned the EGR ports and valves on both.. the vans idle about 200-250 rpm lower and run cleaner..so I hope to see even more FE in the next few tanks!
Thanks for the info guys!
