I posted the FTC lawsuits list. Lubeguard was not on the list. It was Prolong, STP, Z-max, etc with claims to better gas mileage, less wear, prettier girl (or boy) friends, etc. - the usual miracles.
I have no knowledge of Lubeguard except that Saab endorsed them for some specific transmission issues. If I remember correctly, they endorsed Lubeguard red.
Lubeguard can usually be found at Napa parts houses - I've seen it there locally.
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