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what oil

Joined
Jun 3, 2007
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#1
I have a 1984 yz125 what oil should I be useing in the tranny also I'am about to put new piston and rings in it how should I break it in, thanks
 
Joined
Apr 23, 2007
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#2
i have an 83 cr 125 and i use 80w synthetic oil in the crank. lots of people tell me it to thick but all the shops say its the stuff too use.
 
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Oct 15, 2006
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#3
Yes I use 85w-90 made by Honda as well and everyone recommends this stuff and it works fine...
 
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May 9, 2007
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#4
wavemaster said:
i have an 83 cr 125 and i use 80w synthetic oil in the crank. lots of people tell me it to thick but all the shops say its the stuff too use.
80W gear oil is almost the same viscosity as 25W engine oil. The gear oil will be fine in your tranny, as will any good engine oil. How often you change it is much more important than what you put in it.
 
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May 9, 2007
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#6
How you break it in depends on what kind of piston you use. Cast pistons don't need much more than a few minutes of easy running and then you are good to go. Forged pistons require a series of heat/cool cycles to break them in properly.
 
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May 9, 2007
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#8
Whatever oil that you can afford to change frequently. How often you change it is more important than what you put in it.
 
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Jun 12, 2007
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#9
You can use atf type f if needs be, its cheap but u will have to change it frequently, although this should be done with all oils to make sure they did not shear and are in the best condition for your tranny.