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you dont need to add the 4 oz s of friction stuff, rp already has it in it.
I am about to do this, curious if the above is true?
I looked for some friction modifier but I couldn't find anything that said it was XL-3 locally and if Royal Purple doesn't need it that would be one less thing to worry about.
2nd Edit: Got done, easy as pie. I didn't use any tubing, though I did have it on a rack with the rear end dropped down which gave me enough space to bit the bottle at a slight angle above the driveshaft.
Last edited by gmoran1469; 01-14-2012 at 09:00 PM.
Glad I could help out fellow MFers , and thanks Cameron.
candymanjl- I have heard nothing but good things about Redline lubricants, but let me tell you I changed my tranny fluid out a few weeks back to Royal Purple Synchromax and love it. The tranny temp has gone down, it's quieter and smoother shifts are awesome.
As far as the drain plug, I don't know what Ford was thinking .
Glad to see I'm not the only one who noticed a big drop in transmission temps with the synchromax.
If anyone doesn't want to use RTV for the cover, you can get a nice reusable gasket here.
I am about to do this, curious if the above is true?
I looked for some friction modifier but I couldn't find anything that said it was XL-3 locally and if Royal Purple doesn't need it that would be one less thing to worry about.
2nd Edit: Got done, easy as pie. I didn't use any tubing, though I did have it on a rack with the rear end dropped down which gave me enough space to bit the bottle at a slight angle above the driveshaft.
I would still get a bottle of the ford stuff from your dealer. I tried just the royal purple and it was noisy as hell when turning.
While you're under there, and you notice some oil residue on the passenger side axle, you could change the axle vent. Ford has a TSB on it and the dealer sells them - I think I paid ~ $70. The factory vent is a small assembly on top of the axle (about 1/2" round and 1/2" high) and is about 1/2 way between the diff and the brakes . The new one looks sort of like a fuel priming bulb and it is designed to catch the oil vapor and allow it to drip back into the axle thus avoiding the oil mess on the axle. It is working so far.
If you don't use the additive you will get noises from the clutch packs and they will cause chatter - and slowly break your rear end while you hear the noises. It is required.
Thanks for this awesome instructions!!! After reading it over a few times I was fully confident in doing it with no help or review!!
I used royal purple and the additive. Only took me about 1 hour. I had a problem filling it back up, but I got a pump and it worked great. I had a little trouble getting the case back on without touching the gasket to the gears, but going very slowly and entering from the passenger side I was able to get it on without touching.
11-20-2015, 12:15 PM
, and thanks Cameron.
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