Peterayer,
The best way I can describe AIVS #15 PreCleaner, it is like the Enzymatic Formula on Steroids.
As far as I can tell, no Alcohols are in this product, and I was told it contains not one, but two broadband vegetable based Enzymes.
As I understand it, the #15 PreCleaner can be used as a replacement for the Enzymatic Formula, or in conjunction with the Enzymatic Formula as a following-next step.
The #15 can also be used as well as a first step in a two step cleaning process, and then followed by AIVS #6 One Step Cleaner.
As suggested by Osage Audio, it states #15 PreCleaner is not to be used all by itself as a cleaner.
I myself seem to find a 4-step AIVS process works best on all my records, old, or new, using #15, the Enzymatic Formula, the Super Cleaner, and then lastly, the AIVS Pure Water Rinse.
As Doug states, and I concur, on average, a 5 minute application, and soak seeems just about right with all steps preceeding the Pure Water Rinse.
As for the contest-battle of the RCM's, the Loricraft vs VPI method of fluid removal, I cannot personally give the lowdown, having never used the Loricraft, or any other String Feed Nozzle Type Machine.
Advantages, and disadvantages with both machines-methods I'd assume.
I think Doug is more experienced in that regard, having used-owned both. I would probably recieve no flak, saying that the VPI 16.5 is the "best of the cheap". And the most convenient in the lesser expensive RCMs in this price range.
The new Clearaudio Smart Matrix is in another class, with better build construction, better quality of parts consist than the VPI 16.5, and at twice the price, it should be.
I'd still have to say, it's undeniable, that Harry W/VPI still puts out the best bang for the buck, price king RCM on the market, the VPI 16.5.
Some may argue that, in regards to price, as there are many Nitty Gritty Fans.
I personally like the fact that the VPI has a Platter, on which I can easily apply Fluids, no need to move-flip records for vacuuming, that gravity is on my side to let Fluids sit, and soak as needed, before one chooses to remove. A simple swing of the Vacuum armwand, hit two power switches, and the fluid removal is done in two revolutions of Platter.
As for Doug Deacon, I've been following his personal advice, and reading his posts here for a number of years.
Doug IMO, has always been the voice of unbiased logic, sensibility, and wisdom-knowledge. Mark