I found this on Ten Tec site. https://www.tentec.com/faq-ten-tec-pto-lubricant/?fbclid=IwAR24zVzxlqBznaI_FBXCTPOf71OjG5EGT0IuETAtwpGetx6n5hpapNxdsg4 I remember someone from the orginal Ten Tec said they got the green grease from the co-op, but that was years ago. 73, Reed Fite W4JZ