Royal Purple in the Driveline
#1
Royal Purple in the Driveline
Hi all. My truck has about 153K miles, and I have no idea what the service history is, so I thought it would be a good idea to replace some fluids (transmission, transfer case, rear/front diff.) After saving up some cash, I ordered all Royal Purple oil (Max ATF, Synchromax, 75-90, and 75-140.) I have an Amazon Prime membership, so I ordered all the oil online and scored free shipping, but the cost still pushed into the $200+ range.
I plan to do a fluid exchange by pumping fluid out through the transmission cooler. Is there anything special I should know about this? The transmission fluid came as a bundle pack... I will only have 12 quarts, so there will be some old fluid left behind. Any issues there?
Also, I have the 3.55 LSD rear. I don't have any Motorcraft friction modifier, so do you guys think I'll have any chattering issues? Just to make sure, I'll do some donuts and powerslides in the rain and report back.
The oil should be here Wednesday, and I'll get started on it Sunday... probably.
I plan to do a fluid exchange by pumping fluid out through the transmission cooler. Is there anything special I should know about this? The transmission fluid came as a bundle pack... I will only have 12 quarts, so there will be some old fluid left behind. Any issues there?
Also, I have the 3.55 LSD rear. I don't have any Motorcraft friction modifier, so do you guys think I'll have any chattering issues? Just to make sure, I'll do some donuts and powerslides in the rain and report back.
The oil should be here Wednesday, and I'll get started on it Sunday... probably.
#2
#3
I got the Synchromax and skipped the friction modifier based on this FAQ...
It's also a bit of a drive to the nearest Ford dealer, but I'll get some if the life of my diff depends on it.
http://royalpurple.com/faqs-transmission.html
Should I bump the tranny fluid up to... 15 quarts?
It's also a bit of a drive to the nearest Ford dealer, but I'll get some if the life of my diff depends on it.
http://royalpurple.com/faqs-transmission.html
Should I bump the tranny fluid up to... 15 quarts?
Last edited by AndersonS; 09-12-2011 at 04:19 AM.
#4
#5
#7
Trending Topics
#8
I may be wrong here, please correct me if I am, but I think they are referring to a flush rather than a change. It's my understanding that's it's best just to change the fluid at any mileage, but avoid an actual flushing with the machines.
#12
I can't comment on Royal Purple, but I have heard nothing but praise about Amsoil products, That is what I run in the Engine ,Trans, Transfer case, ect. I cannot run it in the rear end because of the Tru-Trac unit I have installed. I know it's a lot of $$ for fluids, but I have had good luck with it.
#13
you are correct sorry i must have miss understood
#14
Have you had any issues with using RP? I was just wondering. I chose RP because I had used it before in the diff and transfercase of a Chevy Trailblazer I had, and noticed small MPG gains, and the car felt "smoother." It's also cheaper than Amsoil. But then again... I guess anything would be an improvement over fluid with 60,000 miles on it.
Last edited by AndersonS; 09-13-2011 at 03:11 AM.
#15