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Scooters - 125 to 300 => Downtown 300 => Topic started by: Yoni159 on November 10, 2024, 12:46:39 PM

Title: Weird transmission oil colour
Post by: Yoni159 on November 10, 2024, 12:46:39 PM
https://ibb.co/Stxsqnw
This is the colour of the oil after 5000km this is looks kinda hazy to my or its normal? Something wrong with the transmission?
Title: Re: Weird transmission oil colour
Post by: Ruffus on November 10, 2024, 03:48:52 PM
This color indicates for ME somehow emulgation, water mixed with oil.
Let it sit for a day or two and look whether oil and water have separeted. If yes, water.
Then try to find out where it came from into your gear.
Might be an oilseal which let water in , or...
Title: Re: Weird transmission oil colour
Post by: Yoni159 on November 10, 2024, 04:27:02 PM
This color indicates for ME somehow emulgation, water mixed with oil.
Let it sit for a day or two and look whether oil and water have separeted. If yes, water.
Then try to find out where it came from into your gear.
Might be an oilseal which let water in , or...
actually i had very minor oil leak around the rear wheel. Maybe its really the oil seal and when i washed my scooter some water got inside.. this is bad? Because replacing the seal its pretty expensive . I think its ok because transmission operation temperature are high so water will evaporate no? I just concerned about the transmission
Title: Re: Weird transmission oil colour
Post by: Ruffus on November 10, 2024, 06:40:26 PM
..assumed: you had/have water in your gearbox

- even at high temps it will destroy your bearings and further your bearing seats

- NO, high temps will not "boil out / evaporate" this water from your gearbox before your sprockets are worn out

- your transmission will only be secondary affected by a broken/ destroyed bearing
Title: Re: Weird transmission oil colour
Post by: Yoni159 on November 10, 2024, 06:45:20 PM
..assumed: you had/have water in your gearbox

- even at high temps it will destroy your bearings and further your bearing seats

- NO, high temps will not "boil out / evaporate" this water from your gearbox before your sprockets are worn out

- your transmission will only be secondary affected by a broken/ destroyed bearing
even if it's really not a lot o water
Title: Re: Weird transmission oil colour
Post by: Ruffus on November 10, 2024, 06:58:44 PM
YES, even it is a little bit of water, a new block costs for sure more than this seals.
Just imagine instead of oil you put a piece of butter in this gearbox.

I would not see this oilseals too tricky and expensive to change, since all are approachable from outside ( if it is this gear shown in pics)
Title: Re: Weird transmission oil colour
Post by: Yoni159 on November 10, 2024, 07:11:21 PM
YES, even it is a little bit of water, a new block costs for sure more than this seals.
Just imagine instead of oil you put a piece of butter in this gearbox.

I would not see this oilseals too tricky and expensive to change, since all are approachable from outside ( if it is this gear shown in pics)
this seal is inside. Outside is the bearing from what is saw so i need to open all the gearbox and i cant do it and it will be expensive work at the mechanic
Title: Re: Weird transmission oil colour
Post by: Stig / Major Tom on November 10, 2024, 09:46:07 PM
Yes, when I saw that in my VW's engine oil - it was water.

Stig
Title: Re: Weird transmission oil colour
Post by: Ruffus on November 11, 2024, 06:49:05 PM
@Yoni159, refurbishing this gear of your scoot is not such a big deal (pls see link).

https://www.kymcoforum.com/index.php?topic=31780.msg222806#msg222806

Just find somebody with some proper tools and logic understanding of mechanical work and this can be done under two hours and renewing oilseals only, under €50,- of material.
Otherwise you might end up with a destroyed gear.
Title: Re: Weird transmission oil colour
Post by: mousejunks on November 27, 2024, 11:35:46 AM
There might be a breather hose from the transmission to the air box, make sure it's not leaking which could let water in.