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[ltank]

I am replacing the clutch plates in my Baker Street Clutch after 38k miles. I will be using the stiffer Diaphragm Clutch Spring for Racing and thier Heavy Duty Throwout Bearing. The other spring is only good for 120HP. I have S&S V124. Baker recommended ATF  fluid with Mercon or Dextron I think. Should I use Primary oil instead?

[havenolife]

use what Baker said to and the trans fluid is the FORD speck not the GM one

[ltank]

Ok Thanks.  Baker didn't specify  Ford or GM.

[grc]

I use the Mobil 1 Synthetic trans fluid that meets both specs, and it works fine in a stock Harley clutch, not just a Baker clutch.  This is in an older five speed Big Twin, not the later models with the Cruise Drive six speed and latest design primary.  I have no experience running ATF in the late models, but as far as the clutch goes it would be fine in those as well.  What I don't know is how the ATF would work with the new style compensator.

Jerry

[longlast]

I'm using ATF Fully Synthetic in my Ultra Classic  its been working fine moving from "N" to 1st is smooth and have no issues back onto "N" and with no clutch drag like I had before I changed over. I'm no expert but I do know what works for me and that's ATF Fully  Synthetic  in the primary

[Texas 103]

I'm using ATF Fully Synthetic in my Ultra Classic  its been working fine moving from "N" to 1st is smooth and have no issues back onto "N" and with no clutch drag like I had before I changed over. I'm no expert but I do know what works for me and that's ATF Fully  Synthetic  in the primary

Most everything I've seen or read is that the compensator needs an EP rated oil. I used Redline MTL, nice & smooth ..very worked very well, compensator was happy ...   

[Smoketown]

I use Red Line in all 3 holes.

Went to 20-60 weight to quiet some of the twin-cam 'ticking'. (Rocker Lockers in the near future.)

Their V-Twin home site - https://www.redlineoil.com/h-d-v-twin

Primary oil site - https://www.redlineoil.com/v-twin-primary-case-oil

Love their products!

Cheers,
Smoketown

[longlast]

Most everything I've seen or read is that the compensator needs an EP rated oil. I used Redline MTL, nice & smooth ..very worked very well, compensator was happy ...   

There's nothing really special to a compensator its only demand is  abundance of lubrication. What does EP do for it?

[ultra13]

Wow, kind of a crazy thread. Never even thought of ATF in any hole of the bike......

[dmnrdn]

When I went to Barnett plates they recommended B&M Trick Shift ATF. Worked great. No clunk easy to find neutral etc

[grc]

Wow, kind of a crazy thread. Never even thought of ATF in any hole of the bike......

It's a natural when you're talking about wet clutches.  A typical automatic transmission is filled with wet clutch packs, and the fluid is specially formulated to work with those clutches.  The auto industry has even used ATF in manual gearboxes in the past, and in transfer cases.  Harley wet clutches have been famous (infamous?) for clutch drag going way back.  ATF made a huge difference for me in earlier models with 5 speeds, can't speak to the 6 speed primaries.

Jerry

[longlast]

It's a natural when you're talking about wet clutches.  A typical automatic transmission is filled with wet clutch packs, and the fluid is specially formulated to work with those clutches.  The auto industry has even used ATF in manual gearboxes in the past, and in transfer cases.  Harley wet clutches have been famous (infamous?) for clutch drag going way back.  ATF made a huge difference for me in earlier models with 5 speeds, can't speak to the 6 speed primaries.

Jerry

Since I was introduced and been running with ATF in my 6 speed all the issues have gone,..such as heavy 1st gear engagement,  sitting at a light and having to hold the dike back from creeping forward, (clutch drag)  having to put it in "N" to backup,  (clutch drag) most of the time having to turn the motor off to get it into "N". There's such a difference on how heavy it was to shift on the foot shifter I literally had to push on the toe arm to get low and high gears.
It didn't happen straight away but after a while it got better and better were now I only have to tap the shifter into gear up and down can push the bike back with out fighting the clutch dragging when in gear.

Just mentioning the noticeable difference in using ATF. in my 6 speed.  What it's doing for the compensator I don't know but the compensator as far hasn't been complaining.

[Dan_Lockwood]

So if I were to put ATF in my '09 primary, which ATF would be recommended?

Thanks, Stay Safe Guys!

[Twolanerider]

So if I were to put ATF in my '09 primary, which ATF would be recommended?

Thanks, Stay Safe Guys!

I like (and use) Type F ATF in the primary of my bikes.  I use the B&M Trick Shift product.  ATF is a good product for our clutches.  However....

I don't recommend it on the newer bikes.  Not because of any difference in the clutches but because of the newer compensators.  They are (or at least were) weak enough I'm more comfortable with something with better lubricating properties.

[longlast]

I add this to the ATF in the primary just to give the compensator that little bit more protection,...at least that's what I'm lead to believe,  and so far the primary hasn't been complaining.
BTW,  this product does state not for type "F" ATF.  I use TRIPLE QX ATF Dexron III