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Discussion Starter #1
My '72 CB350 manual states to use a high quality ATF.

My local Honda dealer has Honda fork oil in 0 and 5 weight. They also have Amsoil in 10 weight.

I don't know the "weight" of ATF. Are there any advantages of using one of the above fork oils vs. ATF?
 

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IIRC, ATF has a viscosity around 7.5 weight. However, I've read that ATF can vary widely in its viscosity.

IMHO, you'd be better off going with one of the specific fork oils - more confidence in its viscosity and more likely to have longer life expectancy in fork service.

Also, since I'm a big boy (215 ~ 230, depending...), I tend to go with heavier weight oil: 15 ~ 20 weight in all my bikes. 5 weight is just too thin to provide much damping a'tall. Again, just my two cents.

Good luck with it.

Kirk
 

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Fork oil dampening is a relative thing... because of my weight (160#) i begin with ATF in my lil yamas. I test run straight ATF, then drain the forks into a gradiated cup, add 5# or 10#, test run this, and then add more as needed to create a optimum. time consuming? HELL YES... but it gets the fork action i'm comfortable with. danWI
 

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Discussion Starter #5
Got it changed out. What came out was a green fluid. Looked good...nice and clear. Sure didn't look like 37 year old stuff.

I filled them with 105 cc of ATF per the manual that was with the bike. The shop manual on this site for 350's states to fill with 200cc. I think that manual is slanted more towards the CL. The CL must have a larger fork due to its "off road" capabilities?
 

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pantera1 said:
Got it changed out. What came out was a green fluid. Looked good...nice and clear. Sure didn't look like 37 year old stuff.

I filled them with 105 cc of ATF per the manual that was with the bike. The shop manual on this site for 350's states to fill with 200cc. I think that manual is slanted more towards the CL. The CL must have a larger fork due to its "off road" capabilities?
The manuals cover many variations of the 350 - make sure the number you use is correct for your particular "K" model.......
 
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