> Did someone say dump it down the drain ?
> I thought *everyone* knew conventional ethylene glycol anti-freeze is a
> serious poison.

So is bleach, but a few drops of bleach per gallon can ensure stored
water remains drinkable by preventing algae growth.
With ethylene glycol, the key factors are 1) dilution, and 2)
exclusion from potable water systems. 4.5 gallons at 50% dilution
dumped into a 450 million gallon/day full treatment system, even when
multiplied times a very liberal estimate of a thousand shadetree
mechanics a day,
is nothing.

Again, recycling is better, but the toilet is highly preferable to
leaving it lying around until you spill it accidentally into the
gutter or someone throws it away into the landfill.

--
John Bange
'90 Vanagon - "Lastwagen"
'90 Vanagon GL - "Wiesel"