Well, i didn't post this to get opinions on whether it's good or not, but since almost all of you seem to assume it isn't, i'll just say this. Suggesting it's bad without any experience, especially long term, would be call an "assumption". There are 1000's of reviews on this stuff many of which i read and are almost all positive that are from users who HAVE EXPERIENCE WITH IT and are not just assuming based on their logic, which by the way unless you are a engineer in the field means little to nothing. If all it took was layman's logic and learning what u know by reading posts by others inexperienced with it to determine what will or won't work, there would be no debates and all products on the market would work. Now, excuse me while i find another place that might answer what i asked rather then revel in the joy of raining on someone's parade without actually knowing whether your raindrops are even valid. Good day...
Couple of qualifiers here
* I HAVE used it in the past in my engines (I was an idiot)
* I AM an engineer
* In my turbine engineering days I DID use it on bearings during turbine overhauls.
Firstly - it makes oil thicker...for better or for worse
Secondly - being additiveless in and on itself, it dilutes your anti wear additive, your friction modifying additives, your detergents and dispersents.
So does the thickening offset the subrtractive effect on additives...unlikley.
The increasing thickness:
* will use more fuel - you may or may not be able to measure it.
* will affect your "W" rating, that is the cold weather performance of your oil - you can't and won't measure that.
So rather than being an "additive", the majority of what it does is "subtractive"...
* takes away your engine oil additive concentrations
* takes gas money out of your wallet
* takes away your cold weather performance
* takes away far more money than buying a properly formulated oil of the next grade up.
Now to why I used it on the turbines, it was SOOOO thick that it wouldn't squeeze out between the bearing and the journal (12"-20" diameter, 8-19" long), meaning that we could turn the shafts using the overhead crane without activating the shaft lifting oil system. Being essentially additive free, it didn't contaminate the bearings or the oil tanks.