I raise the front of my bus about 8" (two pieces of 4x12)... and then rev
the engine to about 3K. Never had a problem. I'm told i could do it w/i
raising the front too.

Matthew Pollard          "Racing with the wind and flirting with death
Dept. Of Chemistry        So have a cup of coffee and catch your breath"
University of Idaho
www.uidaho.edu/~poll7356

On Sun, 25 Nov 2001, Larry Alofs wrote:

> All this trigonometry sure is fun, but I can't help wondering if it is
> really necessary to raise the  front of the van at all when
> filling/bleeding the cooling system.
>   I know what it says in the Bentley, but I have also seen posts from
> those who say that they raise the *back*.
>   It seems to me that if the thermostat is open and the engine is run at
> a reasonable speed, the air is going to come to the bleeder screw at the
> top of the radiator or emerge at the tank where you are topping it up.
>   Of course follow-up bleeding at the radiator for a few days is
> generally  wise.
>
> Larry A.
> 91 GL (parked on a driveway at 10 degrees)
>