Reply To: Hysoung gv125s aquila 2019 – gear oil Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Hysoung gv125s aquila 2019 – gear oil Reply To: Hysoung gv125s aquila 2019 – gear oil May 21, 2023 at 11:11 PM #10340 Cobra2Member Topics: 4Replies: 98 Most important; the oil must be JASO approved. Old and grumpy,(?), have fairly wide engine & tuning experience, "restoring/resto-mod" on cars & mc, worked as electronic tech. (retired). GT125R - sold. New (used): GT250R-efi
