Re: permanent anti-freeze
'Regular' anti freeze is the same as permanent anti-freeze- and permanent when they talk about anti-freeze is just a little more 'permanent' than the one your mom gets. Seriously, if you have an IH Scout, that antifreeze has been changed by now, if only by default (having to change a hose or thermostat, etc), and if it hasn't it should have been long ago. Antifreeze really ought to be changed about every two or three years; the closest thing to permanent they have is some of the newer extended life stuff, that is supposed to be good for 5 years or 100K miles. If I was you, I would NOT go to the extended life antifreeze this late in the game; it is formulated differently, and there is no need to tempt fate on a 20+ year old engine.