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ATF for Fork Oil?

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ATF is high detergent which is good, perfectly fine for older style forks.

http://www.peterverdone.com/wiki/index.php?title=Suspension_Fluid

For years, ATF has been the standard fluid for damper rod forks. Why? Of all the commonly available automotive fluids capable of being used in the system, ATF is manufactured within a very, very tight and suitable viscosity range, esentially ISO 34.

This means that if you are in Florida or Mongolia, AFT is going to be available and consistant. This is a very important bit of information for the mechanic.

ATF is far too thick to be used in a modern cartridge damper fork. These forks tend to use oils in the ISO 16 range.

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ATF is high detergent which is good, perfectly fine for older style forks.

Nice :smirk:

Thanks for the info, I just wanted to hear it from some people with experience.

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Or you can use 10wt fork oil. That is what we used to do. Most ATF is about a 8wt but ATF isn't always consistant for weight. You can also get 7.5wt from PJ1 or blend 5wt and 10wt to get 7.5wt.

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Sure I'm not the only one who uses it in the outer chamber of closed chamber modern forks?

I ran it for awhile, KYBs on my Husky TE450, cleaned out my forks good, I still needed thinner, now running 2.5w

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