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Proper oil for transmission of 78 cr250?
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Author:  78redracerguy [ Mon Aug 01, 2011 1:55 pm ]
Post subject:  Proper oil for transmission of 78 cr250?

Hi guys what is the actual proper weight of oil a guy should use in the transmission of a 78 cr250? In hot climate...

Thanks in advance...

Author:  b-joe [ Mon Aug 01, 2011 5:32 pm ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

i´m using ATF for about 20 years now at all 2T trannies.

Author:  redrocket190 [ Mon Aug 01, 2011 10:32 pm ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

SAE 80w motorcycle gear oil.

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Author:  78redracerguy [ Tue Aug 02, 2011 6:26 pm ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

haha ok you guys are at totally different ends of the rainbow here!!! One is using ATF the other is using 80W gear oil?? I have been using straight 30W but was thinking of switching... maybe i should hold a poll of what everyone else uses.... not whats 'proper'....

Author:  b-joe [ Wed Aug 03, 2011 9:15 am ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

78redracerguy wrote:
haha ok you guys are at totally different ends of the rainbow here!!!

no, :wink: both are gearoils.
ATF is special designed for gears and clutches.
one advantage is perfect clutchwork when oil is cold.
you can also use 10w-40 (or for hot climate 20w-50) MOTORCYCLE engine oil.

choose what you prefer.
don´t use truck or car gear oil.

Author:  78redracerguy [ Wed Aug 03, 2011 5:17 pm ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

Ok I was thinking 80w automotive differential oil when i read it, and I always thought atf was way too thin but hey if you guys use it then obviously its not!! I will likely try the 20w50. Thanks

Author:  78redracerguy [ Wed Aug 03, 2011 5:48 pm ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

Also... Iv always just guessed on the amount but whats the proper amount to put in?

Thanks

Author:  b-joe [ Thu Aug 04, 2011 8:37 am ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

78redracerguy wrote:
Also... Iv always just guessed on the amount but whats the proper amount to put in?

Thanks

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Author:  b-joe [ Thu Aug 04, 2011 8:47 am ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

78redracerguy wrote:
.... I always thought atf was way too thin ...

that´s the advantage, you need less power to turn the transmission with the thinner oil.

Author:  78redracerguy [ Thu Aug 04, 2011 11:42 am ]
Post subject:  Re: Proper oil for transmission of 78 cr250?

Would a guy notice a difference in power if he switched to atf or is that unlikely? Also I never knew about the oil check bolt... i always just looked through the filler hole and guessed... cool... are all bikes like this or just the red racers?

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