1 friction modifier or 2?

[Zippy]

I'm putting in a new pinion seal and fluid in my rear end. I've heard two bottles of friction modifier works better.
Anyone have any experience?

[289Notch]

I have an auburn and I don't use any additives but I do use the royal purple that has it in there already. so

[RNSF]

1 7oz tube or 1 4oz concentrate bottle is more than enough if the Traclock clutches arnt already shot. 2 wont make a bit of difference.

I used 80-90 nonsyn with the 4oz bottle, works great, grabs every time. Does good burnouts

Use the Amsoil 80-90, already has the modifier in it.

[Macs Stang]

I have always used one bottle of friction modifier.

[98RioRedGT]

use one bottle. if your clutchs are chattering than use 2 bottles. the ford part number is XL-3

[Zippy]

Thanks, guys. The guy at Ford recommended using two. He said people has much better luck first time around. He may just be blowing smoke.

[94fobrah]

I have an auburn and I don't use any additives but I do use the royal purple that has it in there already. so

+1

[iamtheshaner]

Thanks, guys. The guy at Ford recommended using two. He said people has much better luck first time around. He may just be blowing smoke.

That's because a lot of people bitch about chatter on brand new clutches. If you are more concerned with the function of a limited slip than the "characteristic" noises of one - use one bottle. The modifier literally reduces the clutching ability of the diff therefore reducing the noise they make when they slip.

[Zippy]

That's because a lot of people bitch about chatter on brand new clutches. If you are more concerned with the function of a limited slip than the "characteristic" noises of one - use one bottle. The modifier literally reduces the clutching ability of the diff therefore reducing the noise they make when they slip.

Makes sense. I'm using one.