Schaeffers #132 is a good product. It is currently in my brothers boat, it will be in my Aerostar at some point too. We thought we'd give it a try in the boat to beef up the oil and get it to cling to the engine internals. My brother seems to be happy with it so far.
I have had only one or two UOA with the #132 and I use 4 ounces of it with 4 oz of LC at the oil change. The UOA did seem slightly better in the wear metal areas then without it but I cannot really say that its use makes a noticeable difference in the operation.
Our fleet of four gets 1oz. per qt.
I have been doing this for five or so years.
Unless I am using Schaeffer's oil.
Also add 3oz. ARX.
Have had no comsumption issues with two in the 110k range.
A full bottle added is only for oil burning engines.
GREAT product, also great for flat tappet cams... I use it in all my Muscle cars. I also know of a few Shelby guys that use it when they road race their BIG bucks cars.
Have you used it in your daily driver? Do how much do you add, do you thin it at all?
I have tried it in a Acura and a Toyota but really never could tell if it did anything. Those vehicles were running very well before adding it and continued to perform good after adding the 132. I have always added the pint as stated on the label and it never really seemed to effect the thickness of the oil. The gas mileage in the Acura did seem to go up a .5-1 mpg with the 132.