[RGSchmitt]

Hi all -

There are "modern" coolants better than glycol. I've had Dex-Cool in
my Imperial/Mopar engine for "a long time" - it still is clear and
there's no signs of corrosion. Of course, not much aluminum in this engine.

This is the original formula Dex-Cool. It's been re-formulated
because of some complaints and is sold in the US by
Zerex/Valvoline. Their website states:

GM DEX-COOL Approved Protection for up to 5 years / 150,000 miles
Organic Acid Technology (OAT) minimizes corrosion inhibitor depletion
Patented formula contains no silicates, phosphates, borates, nitrates
or amines
Excellent rust and corrosion protection
Helps prevent boil-overs and freeze-ups
Protects all cooling system metals including aluminum

Surely there must be something similar available outside the US that
will inhibit aluminum corrosion better than distilled water.

Bob