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Old 05-25-2011, 11:57 PM
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Default Fork oil substitution

     

Stumbled upon a few different conversations on differrent websites about using AFT for a substitution for fork oil.
Herd the mobil synthetic ATF is almost equivilent to 7 weight Fork oil.

Has this been discussed on this website before?
Has anyone tried it before?

ATF is a very versitile oil. Its been used by many of people for applications such as... Power stearing fluid, Hydraulic fluid, Diesel fuel additive, among others.

It doesnt foam up, i could see that being a positive as a fork oil substitue...
As for the weight of it.... i have no clue.
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Old 05-26-2011, 01:31 AM
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Yes I have used it. I believe it works out to be more like a 15wt oil. In my Honda I love the stuff. It lasts longer and worked really well.

In my RMZ however, I hated the stuff. The initial stroke was just too stiff. I got arm pump like no other with it. Needless to say, I didn't leave that oil in there very long. Just something about the way the valving is in my RMZ showas that's different than the Honda. I did have my Honda revalved though (the revalve was not specific to the oil either).

Hope that helps.

My suggestion... Try it and see.
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Old 05-26-2011, 05:34 AM
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Now why do people have to go and use other things? I could see if your in a pinch, but for the price why would you not run what belongs in your suspension? And if it's like stated above ^ 15wt^^ forks are usually supposed to have 5wt. Kindof like people who want to try regular motor oil in the clutch side of the bike and wonder why the clutch wont last just to save a few bucks.
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Old 05-26-2011, 08:29 AM
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I have always used the specified oil because of this! It is recommended for a reason and damage could occur if it isn't.


Luke
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Woods Rider Parts.com
2009 Husky WR250
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Old 05-26-2011, 10:22 AM
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i think im gonna start running AFT in my forks and in my gear box. hell... i might as well use it for pre-mix too. lol. just kidding.... not for pre-mix.
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Old 05-26-2011, 10:49 AM
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It may feel too light for an older damper rod rig like the 82 you were asking about, but it works ok in those if the weight is right. lots of those old critters specified 30wt motor oil.

funny how "oil" affects some people's minds lol
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Old 05-26-2011, 12:12 PM
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Quote:
Originally Posted by bbrmotosports View Post
Kindof like people who want to try regular motor oil in the clutch side of the bike and wonder why the clutch wont last just to save a few bucks.
your not supposed to run motor oil in there...?
well its workin fine for me so far!!!
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Old 05-26-2011, 03:30 PM
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Wow, I'm amazed at how many of you can't think out of the box and try something new and different... If the manual doesn't say it, it's not true... right???

Please tell me why/how running ATF in your forks is going to damage them?

Oh and let me throw a wrench into this for you. One of the hot tickets for fork oil was Mobil Full Synthetic 0w20 that I know of more than one person running it a while back (not sure what they are running now).

The reason forks and shocks come with the weight oil they do is because the internal valving is tailored to that weight oil. Plain and simple.

However, how many people actually fit into the "mold" the stock suspension is setup for? I would say a lot do, but their is a large group that doesn't. Using different oils/weights is a simple easy way to fixing suspension problems that would require an expensive revalve otherwise.

I'm sure their are trade offs when going this route, but that's the case with most everything in life...
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Old 05-26-2011, 07:28 PM
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Quote:
Originally Posted by Woody_393 View Post
Wow, I'm amazed at how many of you can't think out of the box and try something new and different... If the manual doesn't say it, it's not true... right???

Please tell me why/how running ATF in your forks is going to damage them?

Oh and let me throw a wrench into this for you. One of the hot tickets for fork oil was Mobil Full Synthetic 0w20 that I know of more than one person running it a while back (not sure what they are running now).

The reason forks and shocks come with the weight oil they do is because the internal valving is tailored to that weight oil. Plain and simple.

However, how many people actually fit into the "mold" the stock suspension is setup for? I would say a lot do, but their is a large group that doesn't. Using different oils/weights is a simple easy way to fixing suspension problems that would require an expensive revalve otherwise.

I'm sure their are trade offs when going this route, but that's the case with most everything in life...

You sir are right, but no offence to anyone but most people on this site know verry little to none about suspension or valving. just because you can change fork seals does not mean you know everything about suspension. Not trying to start anything but their is alot more to suspension than people think.
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Old 05-26-2011, 10:27 PM
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Quote:
Originally Posted by ossagp View Post
It may feel too light for an older damper rod rig like the 82 you were asking about, but it works ok in those if the weight is right. lots of those old critters specified 30wt motor oil.

funny how "oil" affects some people's minds lol
oh no, i was just asking for a service manual for an 82 xr500 for a buddie of mine, i am gonna adjust his valves for him.

but in my 00 cr250 i was thinking about swaping the fork oil and gear box oil to AFT, just because i am tunring into a cheap C**T. And bel-ray gear oil is $15 a quart up here in canada. i would rather send 5 bucks on AFT and change it more regularly.
I think the bel-ray fork oil is close to 20 bucks a quart.

thanx for input guys.

i'll thin out the AFT with some paint thinner and run it in my forks... haha. Kidding!!!!
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Old 05-27-2011, 10:38 PM
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Stock cammed ones call for .002" and .004".

Last edited by ossagp; 05-27-2011 at 10:45 PM.
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Old 05-30-2011, 09:27 AM
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automatic fluid transmission?
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Old 05-30-2011, 02:29 PM
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That's what he's talkin about yea tranny fluid
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Old 05-30-2011, 11:11 PM
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yeah, i thought it came in .002 and .004 everywhere.
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Old 05-31-2011, 08:30 AM
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Quote:
Originally Posted by ossagp View Post
yeah, i thought it came in .002 and .004 everywhere.
Not in Canada Andy.
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Old 05-31-2011, 01:16 PM
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That is what I am learning, Leroy.
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Old 06-01-2011, 09:27 AM
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here in canada we call it automatic transmission fluid (atf) which is fluid you put in your automatic transmission. never knew you could get automatic fluid for your transmission (aft) LOL just picking on ya
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