Hi Milland,
Thanks for your message and yes sir/ ma'am, we are always happy to answer questions about our products! I'll do my best to answer your above questions (in general) but please don't hesitate to reach out to us if you'd like to discuss your specific scenario in more detail.
1)
Sump Life- All of our products are known for having an incredibly long sump life and for not souring in the sump. So, no bad smells and no science experiments growing
. A lot of our customers switch to us and stay with us because of this very issue (we would be happy to provide as many references as needed). Obviously, the bio-resistance will vary from category to category as straight cutting oils, full synthetics, soluble oils, etc... are all very different. But for a quick example, our
SterlingCool-55 (one of our most popular products) is an extremely premium heavy-duty Soluble Oil and is known to last well over a year in sumps! That's saying a lot for a Soluble Oil! Our customers typically use this product as a replacement for other "top-shelf" brands such as Blaser, Qualichem, Hangsterfer's, Hocut, etc.... And in regards to clean-out before change-over, our chemists actually specialize in formulating matching replacement products for our competitors....so the majority of our products are considered "drop-in replacements" and no clean out/ downtime is needed. However, if you are changing categories (full synthetic to semi-synthetic, soluble oil to straight cutting oil, etc...) then you would want to do a clean-out. Or if your sump is already moldy/ smelly from a previous coolant, we would recommend flushing the sump before starting fresh and never looking back. We sell a really great (and inexpensive) sump cleaner....free shipping included of course
2)
Mixing Recommendations- Our chemists have created recommended Mixing Guides for all of our products to make this easy and to help remove any of the guess-work for our customers. They do provide a range because as you mention above, some of our customers prefer to mix their cutting fluids a little thinner or a little thicker depending on how they are using it.
3)
Oil and Grease Separation- All of our products are really great at rejecting "tramp oils" and we have never heard a single concern from any of our customers on this.
4)
Draw out with chips- Our chemists have designed/ formulated all of coolants and cutting oils to have an extremely low "carry-off rate". This helps to ensure minimal replenishment (money saved).
5)
Filter Recommendations- Good question...this will again vary tremendously on a case by case basis depending on factors such as the category of product (cutting oil versus coolant), the machining applications and desired level of surface finish. We have customers that swear by (and get terrific results) using a 20-25 micron filter on soluble oils, full synthetics, etc... and we have customers that use a 2 micron! We usually discuss that on a case by case basis with each customer taking into account their individual situation.
I hope that helps answer some of your questions and again, we are here to help. All of our customers love partnering with us because at the end of the day we are simply here to help them save money and improve quality at the same time. Our prices (with being wholesale and eliminating the middle-man mark-ups) always gets our foot in the door, but ultimately the quality of our products and service is what keep us in business!
Thanks again and please don't hesitate to contact us should you need anything at all.