Does this work?
Prestone® Extended Life Antifreeze/Coolant is compatible with most antifreeze/coolants, regardless of color, for use in cars and light-duty trucks. This formula provides a high degree of performance durability and carefully balanced protection against temperature extremes, rust and corrosion of cooling system metals, including aluminum.
Product Features:
Provides long-lasting protection for extended performance when added to extended-life antifreeze/coolant
Protects engine cooling system metals, including aluminum, against rust and corrosion
Free of silicate, phosphate, borate and nitrate
Meets or exceeds ASTM D-3306 and ASTM D-4985
This is the spec for the ISL 400? ASTM D-4985
At $12.47 on Amazon seems like it fits the bill?
Not trying to start an argument but if it meets spec, it should be fine, right?
Just a question,
