Originally Posted by MagnumGuy

But if you constantly engine break wouldn't you wear off the mounts faster than usual? Interesting approach to increasing gas mileage though. My 07 gs350 is doing 15 mpg on the city and about 18 mpg on the freeway. I just serviced it for the 100K mile service too. My only concern is that I have 22" wheels and maybe that is using up more fuel.

I have tried to drive under 2k rmp and when coasting between blocks, I shift to the last gear to give it a smooth coasting speed but am still experimenting with it. Any other ideas to increase mpg? Thanks.