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Fork Oil GT80

09 Jul 2020 06:14
6drj32
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Fork Oil GT80 #1
Hello,

I need to change fork spy on my GT80.

I will do it tomorrow. I'm wondering what kind of oil I need to choose for the fork.

I checked in the service manual and I see that it say: Fork Oil, engine oil 10W30

Usually, I put special fork oil. Is it normal to put engine oil in the fork ?

Maybe before, fork oil doesn't exist ?

Should I put fork oil 10W or engine oil 10W30 ?

Also, I want a fork harder, maybe I can put oil 20W ?

Thank you for your answers.

Julien.

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09 Jul 2020 13:34
Swoop56
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Fork Oil GT80 #2
20 w wouldn't be a bad place to start from . You can always go lighter if it's too harsh .

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10 Jul 2020 16:43
mryan
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Fork Oil GT80 #3
If your body weight is under 100 lbs, than 10w would be ok. If you weigh more than 150 lbs I would go with the 20w. You don't want to be bottoming out all the time.

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12 Jul 2020 13:32
6drj32
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Fork Oil GT80 #4
Ok thank you :)

My body weight is 175 lbs (80kg) so I will put 20w50 :)

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