Schaeffer here for all my fluids that they make. I slowly fluid by fluid switched over as I thoroughly researched and tested each. you want to talk about anal about stuff. that's me. I have a good farm store near me that carries it and at a great price. I get it in the 5 gal buckets. It cost me less than amsoil, mobile 1. Always under $20 a gal plus I get free oil analysis every so often. 9000 5w40
They by far have the best additive package IMO in their oil.
What I really respect about Schaeffer is they are one of the only oil companies that actually tells you what is in their oil (within reason)and what base oils they use. You will get nothing but lip service from the likes of Amsoil, Mobile One etc... Heck they will not even confirm that they use only or any Group IV oils. Only they use what their testing has shown to be best. Its all a Pandora's box of black magic with most of these compnaies.
