RE: non triumph - losing water out of rad.

["Randall" <tr3driver@comcast.net>]

> On long journeys in my daily driver, water get pushed out of the rad
> and into the overflow bottle.  When the car cools down, shouldn't he
> water return to the rad?

Yes.

>  If is doesn't can I assume the rad. cap is
> the problem.

The cap is most likely, IMO, but there are many other possibilities.

> If not, what could be causing the problem?

Basically anything that will let air or combustion gases into the cooling
system.  Could be a crack in the overflow hose, bad seals in the water pump,
leaking head gasket, etc.

Randall