Green antifreeze or coolant as some call it.

I have looked at the Prestone site, and the only thing I find there is a brand called Prime, with low silicate formulation. I don't know if that is good or bad for my Slant Six.

Bill
That's the only one on their website that is probably appropriate.
Yup. Completely annoying they don't actually have a basic description.

The autozone conventional was the only stuff I could pick up easily around here. :rolleyes:
A lot of places don't bother carrying the full line of any brand. Easier to just tell the consumer "universal" is OK.After all, they;'re not going to be dealing with the consequences.