Re: Martin 75 Twist Shift Gear oil? Home › Forum › Ask A Member › Martin 75 Twist Shift Gear oil? › Re: Martin 75 Twist Shift Gear oil? westwindCanada Member - 1 Year (includes $3 online payment fee)Replies: 374Topics: 10 April 20, 2018 at 4:57 pm #74378 If memory serves, I think that one is SAE40 oil, not grease or 80/90 gear oil.