Transmission fluid help for Coolster 175cc

Jwinter · 01-27-2024, 12:09 AM

Accidentally drained the transmission fluid when trying to change oil…do’h. The fluid that came out was green, replaced with red universal atf(bike shop guy said it would be fine.)
After replacing fluid couldn’t shift into drive / reverse, added more fluid and now it will shift but roughly.
Kinda nervous to take it out riding not knowing if I used the right kind or amount of fluid, any recommendations would be appreciated.

**JerryHawk250** · 01-27-2024, 07:25 AM

If it's a GY6 engine, it will use gear oil and not transmission fluid. Post a picture of the engine.

dirtbkr188 · 01-27-2024, 10:04 AM

Here is a pic of it from the Coolster website, it looks to be a GY6 engine...

Jwinter · 01-27-2024, 12:32 PM

Yes that is the engine that dirtbk188 posted.

Can I drain and replace with gear oil…what kind?

krat · 01-27-2024, 02:51 PM

It will usually be a 90# oil. It is available at any auto parts center or farm supply, or Walmart, just ask for "gear oil".

Most of those CVT units have two screws, one on top and one below it at the rear of the case. You drain through the bottom and fill through the top. Just pour the oil in until it is overflowing out the top filler hole.

dirtbkr188 · 01-27-2024, 02:53 PM

I would suggest the Bel-Ray Gear Saver Transmission Oil (SAE 80W), made for wet clutches.

01-27-2024, 12:09 AM	#1
Jwinter Join Date: Jan 2024 Posts: 2	Transmission fluid help for Coolster 175cc Accidentally drained the transmission fluid when trying to change oil…do’h. The fluid that came out was green, replaced with red universal atf(bike shop guy said it would be fine.) After replacing fluid couldn’t shift into drive / reverse, added more fluid and now it will shift but roughly. Kinda nervous to take it out riding not knowing if I used the right kind or amount of fluid, any recommendations would be appreciated. Last edited by Jwinter; 01-27-2024 at 12:12 AM. Reason: Added context
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01-27-2024, 07:25 AM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,533	If it's a GY6 engine, it will use gear oil and not transmission fluid. Post a picture of the engine. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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01-27-2024, 02:51 PM	#5
krat Join Date: Nov 2019 Location: KY Posts: 257	It will usually be a 90# oil. It is available at any auto parts center or farm supply, or Walmart, just ask for "gear oil". Most of those CVT units have two screws, one on top and one below it at the rear of the case. You drain through the bottom and fill through the top. Just pour the oil in until it is overflowing out the top filler hole. __________________ %90 of the Chinese motorbikes ever made are still on the road. The other %10 made it back home.
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01-27-2024, 10:04 AM	#3
dirtbkr188 Join Date: Aug 2009 Posts: 493	Here is a pic of it from the Coolster website, it looks to be a GY6 engine...
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01-27-2024, 12:32 PM	#4
Jwinter Join Date: Jan 2024 Posts: 2	Yes that is the engine that dirtbk188 posted. Can I drain and replace with gear oil…what kind?
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01-27-2024, 02:53 PM	#6
dirtbkr188 Join Date: Aug 2009 Posts: 493	I would suggest the Bel-Ray Gear Saver Transmission Oil (SAE 80W), made for wet clutches.
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