Hi folks, I have a gilera runner 2011 125, I want to change the gear oil as I have had the scooter for 10 years and has 35,000 miles on clock , so I think the gear oil could be with being changed, the manual states that the oil is 80w 90 api GL3, I don't think you can get GL3 anymore, so would it be okay to go to Halfords for instance and get a bottle of 80w90 GL4 mineral? Or can anyone recommend one? Thanks
