I received a response to an E-mail I sent to Penray. I'll post both, and you be the judge:
I am interested in your product, however, your website does not explain what the product base is. Is it an alcohol base? Does your product work by emulsification of water, or demulsification? I own a GM Duramax Diesel, and I was wondering if it is safe to use? Any help will be greatly appreciated!
Thank you in advance for your help,
Since we have quite a few products, this is not an easy question to answer. In general, our products are not alcohol based. Further, for the most part we are not attempting strictly to emulsify or demulsify- it is simply a benefit of the product. However, on our winter treatments (Winter Pow-R Plus and Winter Blend) and our year round treatments (Fuel Prep) we are closer to an emulsifier. We disperse the water throughout the system.
In winter, if you demulsify, the water drops to the bottom of the tank and pretty much guarantees that you'll have a big ice block form. If you emulsify, it spreads the water out and, while some ice crystals may form, they aren't close enough to other water parts to join up and form big ice blockages.
In summer, it's the same principal. If you demulsify and the water goes to the bottom of the tank, it provides a larger and more suitable environment for bugs. We emulsify, spread the water out, and make it harder for the bugs to survive in your fuel.
All of our products, summer and winter, should be safe to use in your GM.
Hope this helps. Feel free to contact me if you have more questions.
Director of Marketing
The Penray Companies, Inc.