I use what was known as "Forum Lube" ( a different forum, not this one) which was developed by a poster who analyzed ProLink when it was first marketed. He concluded it was a blend of synthetic motor oil and OMS in a 1:3 V:V ratio. I make it using Mobile 1 (10W30 but it the viscosity you use probably doesn't matter much) and OMS. I originally bought a quart of Mobile 1 and a gallon of OMS. I mix it it 1 quart amounts in a metal solvent can and dispense it from a reused 4-oz ProLink bottle. I have used it for years and am still working off the original oil and OMS purchases.