Is it moreviscous though? Does it have to be? I wonder if it freezes like
water does? That could be embarrassing on a day like today, sorry guv our
battery is now an ice rink.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Andy Burns" wrote in message
...
S wrote:

I expect they say its because of PE = m.g.h
where PE is Potential energy = mass x value of gravity x hieght.
So by increasing the mass by 2.5x, you then get 2.5 x the PE.

but as well as getting 2.5x out, you have to put 2.5x in, plus you have to
deal with losses from pumping a more viscous fluid.