>It is from Subaru
>
>Subaru
>Professional Use
>Cooling System Conditioner
>
>Net Contents 4.4 FL Oz (125 ML)
>
>Part No SOA635071
>
>Evidently some of the Subarus had coolant leak problems, too

Yeah, apparently the 1999-2002 2.5l had head gasket issues. I perused a
Subaru forum topic and with the exception of a few minor details, they
might as well have been talking about Vanagons and wasserboxers. Subaru was
apparently very reluctant to admit they had a problem, and when they did
admit it, they were resistant to doing any more than adding the Cooling
System "Conditioner". The stuff apparently works really well, but it only
can do so much. A significant number of people with leakers that couldn't
be fixed with "conditioner" said it was like pulling teeth getting Subaru
to change the bad gaskets. In one woman's case, they just kept "fixing" the
leak with repeated applications of "conditioner" until the warranty ran out.