I am using cenex oil currently - my Dad works at a Coop that sell it and I get a decent price. I have a guy that stops all the time trying to sell Amsoil. The other day a guy dropped a card wondering if I would like to sell/distribute schaffer oil. These oils have everything, hydro, gas engine, diesel engine, grease's etc. What do you guys run in your equipment? One oil better than another? sythenic oil or regular oil? Options - and more options.