gear oil

[RUXOR]

What is a good gear oil for my scooter? Also, how much oil do i add once i drain it?

[blue]

I use pennzoil  Gear plus  80w - 90 and you fill it till it comes back out the same hole you are filling up.

[REDKYMCO]

I used fuch silkolene boa 80w90 gear oil, my manual says full capacity 110ml but on change 100ml i guess this is because at least 10ml will have clinged to the gears and casing etc, my manual also says fill level with the fill hole so as soon as it starts to flow out of the fill hole its full, i used a medical syringe to fill mine but once i got to 80ml it was upto the fill hole i was not comfortable that there was now enough oil as i also noted then when i drained the factory oil i removed the fill bolt first and a good 20ml must have flowed out before i removed drain bolt so the next day i warmed engine up drained all the oil filled again to fill hole which was 80ml then i quickly inserted another 20 ml and replaced bolt and then felt more comfortable, i know some people on here will not be happy with me filling above fill hole but i think one problem we have with the gy6 fitted to the agility frame is when it is on its stand it runs down on a good angle compared to when this engine is fitted to the likes of the peugeot v-clic etc and i think thats were the problem could be, i could have this wrong but i feel more comfortable with putting in the full 100ml as per the manual instrutions, my wifes agility 125 is totaly different as it asks for 180ml on change which is fine as it gets nowhere near the fill hole, anyway you may want to go with your manual but here is a link to the oil i purchased which is the correct grade as far as i know and it works fine for me... http://www.ebay.co.uk/itm/SILKOLENE-BOA-80W-90-/160612500392?pt=UK_Motorcycle_Parts&hash=item25654043a8