Jimateo, I gotta agree with Hdm.
I've tried to convince many in another forum, but with little luck, as many are very headstrong about thier (IMO garbage) DIY solutions of Dawn Dishwashing Fluid, Kodak Photo-Flo, 99% Alcohol, Distilled Water. Then to top it all off, throw all these makeshift chemicals into an inappropriate, unsuitable container.
All the products I mention above have no place on vinyl, but of course, there's the naysayers that the best products made on the market are nothing more than over-hyped snake oil. Trust me, they're only fooling themselves.
High quality cleaning products will insure a proper job is done, and no future damage.
There's tons of information right here in the archives, all you have to do, is a simple search on products like AIVS, Walker Prelude, Mobile Fidelity Sound Labs (Mo-Fi) L'Art Du Son, Buggtussle, etc.
Thanks to certain folks here, and one in particular, I have become a religious AIVS user (Thanks Doug D!) Once you use products like this, your worries, or concerns if you are using the proper products, and treating your vinyl as it should be treated will vanish, and your search for the very best cleaners will end.
I too, use a VPI RCM, and my only regrets were not doing this many years ago. Mark