FSM says to use ATF as fork oil?!?! - Wrist Twisters
 
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post #1 of 8 Old 04-17-2013, 07:47 PM Thread Starter
Ian
 
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FSM says to use ATF as fork oil?!?!

Today I removed and tore down the forks from my 1983 CBX550F. I have a leaky L/H fork seal that needs to be replaced.

The seals are in the mail and should be here early next week, figured i would tear them down to see if any other parts need to be replaced. I quickly realized the fork seal retaining circlips were trashed, and the back up rings were also U/S.

I am heading to the dealer tommorow to order new parts, and figured I would grab some fork oil as well. Opened the service manual to check what weight to buy .... and it says to use ATF? (automotive automatic transmissiin fluid)

The fluid that came out of the forks looked like fork oil,not ATF? It was creamy brown, not red.

Anyway I want to run fork oil, any idea what weight I should run. Or should i stick witb ATF. I am thinking 10w fork oil ......

Any tips or ideas?

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post #2 of 8 Old 04-17-2013, 08:11 PM
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The 83 vt 500 I have recommends ATF as well. Who am I to second guess Honda. It got ATF.

Spoiler:

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post #3 of 8 Old 04-17-2013, 08:12 PM
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10w fork oil will be fine...lots of older bikes spec ATF as replacement fork oil, dont feel too alarmed by it.

Well, fire the engines! Spur this iron space-pony on!

"The Shadow"
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post #4 of 8 Old 04-17-2013, 08:52 PM
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Generally speaking, for rebound control in old school damper rod forks, somewhere in the 10W to 15W zone is what is best to use, especially if the spring rate has been upped.
Ideal can sometimes be a blend of the two.

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post #5 of 8 Old 04-18-2013, 03:24 AM
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Quote:
Originally Posted by HeliMech View Post
.... and it says to use ATF? (automotive automatic transmissiin fluid)
Old skool, bro.

Back in the day, fork oil hadn't hardly even been thought of. We used to talk disparagingly of the emulsified "fish oil" that we drained from Jap bike fork legs, and think we were going REAL hi-tec with ATF....

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post #6 of 8 Old 04-18-2013, 06:17 AM
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If the Flying Spaghetti Monster is talking to you I would do what he says.

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post #7 of 8 Old 04-18-2013, 06:34 AM Thread Starter
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Thanks for the info everyone. I think I will go with some 10W fork oil, since I already have some. When I drop by the dealer today I will ask what they recommend as a replacement, but I trust you guys more then a dealership any day. The only ATF I have already is Honda DW-1 full synthetic, pretty pricey stuff to use as fork oil.

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post #8 of 8 Old 04-18-2013, 06:35 AM Thread Starter
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Quote:
Originally Posted by sburton6 View Post
If the Flying Spaghetti Monster is talking to you I would do what he says.

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