Well, I consider myself a naturally refined gentleman, so... [blues]
Thank you, BigInch - I don't know why I didn't think of that myself. That's a big help.
[For future time-travelers practicing their google-fu, you can search the automotive section of Amazon for "non-detergent oil."
I'm setting up a lab to run ASTM D3230 - Salts in Crude (Electrometric Method) and I need help finding a vendor/source for clean oil with which to build the calibration curve. From the section on reagents and materials:
I am having no luck whatsoever finding a source online - most...