Tranny and Diff Fluid swap: Gotta take it to a mechanic
Originally Posted by CarAndDriver
From what I have read on here and from people's results, RP is the way to go for transmission and differential. Max-Gear 75W90
http://www.royalpurple.com/prodsa/mgeara.html
http://www.royalpurple.com/prodsa/mgeara.html
im a n00b here, are you really with car and driver? or are you just a smartass?
2005 Black RX-8 GT 6M
Joined: Jul 2006
Posts: 6,350
Likes: 0
From: San Jose Area
Originally Posted by Big_Mike_4488
Ok, EDIT #2: Called my mechanic back. (The one who talked to the stupid mazda guy yesterday) Anyway, he is very hesitant about doing the process, since the guy told him Mazda said not to. He also told me that the Mazda guy said something about having to add an extra additive from Mazda for the differential fluid because it is a limited slip? WTF? I've never heard anyone mention this before, and I'm hoping this isnt the case. Anyway, he gave me a $120 quote for just labor, so I think I will be shopping around for someone else to do it, or might even spring for buying floor jacks and jack stand.
Last edited by CarAndDriver; Sep 2, 2006 at 03:35 PM.
Originally Posted by Big_Mike_4488
Well, I talked to the guy today. The labor isn't gonna be too bad, but he called his friend at the Mazda dealership, and called me later that day to tell me the Mazda people said putting synthetic tranny and diff. fluid in the car is quote: "a very bad idea". I knew this was the case with motor oil, but was surprised to hear this about the fluids. I know a lot of you have made the swap. Anyone else got some info. on this claim?? I hope Mazda isnt just saying this for no reason.
I understand the agurment between synthentic and Mineral, but thats for engine oil.
Trans and rear diff ? WTF ?
Originally Posted by nycgps
Please Tell your mech's friend's boss to fired your mech's friend.
I understand the agurment between synthentic and Mineral, but thats for engine oil.
Trans and rear diff ? WTF ?
I understand the agurment between synthentic and Mineral, but thats for engine oil.
Trans and rear diff ? WTF ?
you are not intelligent.
Originally Posted by nycgps
I never said Im
but I think u're dumber than me.
but I think u're dumber than me.
based on what?
I'm not the one that thinks that there is no possible way a tranny and/or diff could possibly have an actual oil specification.
'Na just go ahead and dump anything in there'
oh yes, you can dump anything in there, as long as its within the "SPEC".
I never said u can dump canola in there, lets see whos the dumbass now ?
Same thing goes for Engine oil. Babies cry when they see synthentic, the sad thing is that Im using it, and I have no PROBLEMS ! and guess what, my Synthentic oil is WITHIN THE SPEC !
Get a life, moron.
I never said u can dump canola in there, lets see whos the dumbass now ?
Same thing goes for Engine oil. Babies cry when they see synthentic, the sad thing is that Im using it, and I have no PROBLEMS ! and guess what, my Synthentic oil is WITHIN THE SPEC !
Get a life, moron.
Registered
Joined: Aug 2005
Posts: 205
Likes: 0
From: Albany, NY
Originally Posted by Big_Mike_4488
Well, I just talked to the head guy at my local Mazda's service department. He said Mazda has not said yes or no as far as synthetic fluids, but that it is perfectly safe for the car. Quite a difference since yesterday when some other fella tells my mechanic that using synthetic is a "very bad idea". Oh well, time to order the fluids. Thanks for the help everyone.
EDIT: One last question. I went to the Rosenthal Mazda website to order the fluids and the washers. It only had the drain plug washers for the tranny and diff. Do I need to switch out the fill plug washers too? If so, are they the same as the drain plug washers??
Ok, EDIT #2: Called my mechanic back. (The one who talked to the stupid mazda guy yesterday) Anyway, he is very hesitant about doing the process, since the guy told him Mazda said not to. He also told me that the Mazda guy said something about having to add an extra additive from Mazda for the differential fluid because it is a limited slip? WTF? I've never heard anyone mention this before, and I'm hoping this isnt the case. Anyway, he gave me a $120 quote for just labor, so I think I will be shopping around for someone else to do it, or might even spring for buying floor jacks and jack stand.
EDIT: One last question. I went to the Rosenthal Mazda website to order the fluids and the washers. It only had the drain plug washers for the tranny and diff. Do I need to switch out the fill plug washers too? If so, are they the same as the drain plug washers??
Ok, EDIT #2: Called my mechanic back. (The one who talked to the stupid mazda guy yesterday) Anyway, he is very hesitant about doing the process, since the guy told him Mazda said not to. He also told me that the Mazda guy said something about having to add an extra additive from Mazda for the differential fluid because it is a limited slip? WTF? I've never heard anyone mention this before, and I'm hoping this isnt the case. Anyway, he gave me a $120 quote for just labor, so I think I will be shopping around for someone else to do it, or might even spring for buying floor jacks and jack stand.
2005 Black RX-8 GT 6M
Joined: Jul 2006
Posts: 6,350
Likes: 0
From: San Jose Area
Originally Posted by Punksux
i did my change of tranny and diff fluid at a mazda dealership in albany and it cost me 80$ total. 40 for the tranny and 40 for the diff. I supplied them with the redline fluids. I am guessing the 120 is the normal price they usually give to people for the labor plus oil. I was quoted a similar amount at a jiffy lube place. Something about them not being able to change the price even if i provided fluid which is horse crap.
Im 8 drifting on a budget
Joined: Oct 2004
Posts: 1,002
Likes: 0
From: Marble Falls Tx.
I had mine changed by a neighbor who thinks if he doesn't use his crafsman ramps and 3 ton craftsman jack everyday, life as we know it will come to an abrupt and crazy end...so to not spoil his graditude of job well done, I provide the beers.....He's a saint... 
Originally Posted by mac11
i never said synthetic couldnt be used did i?
i believe what i said was: there may, just possibly, be an actual requirement that needs to be met in the type of fluid used.
i believe what i said was: there may, just possibly, be an actual requirement that needs to be met in the type of fluid used.
theres no "ifs/maybe". Its all in the manual.
Better luck next time, smart one.
Last edited by nycgps; Sep 8, 2006 at 06:31 AM.
the stig is my hero
Joined: Feb 2006
Posts: 701
Likes: 0
From: NC
I guess it's whatever floats your boat. I for one happen to enjoy spending time working on my car. Some people would rather be doing something else. The procedure takes all of half an hour (an hour if you are meticulous about it), and requires very minimal supplies. Who knows, if you get jack stands, maybe you'll be inspired to start tearing more things apart on your 8 ;-)
2005 Black RX-8 GT 6M
Joined: Jul 2006
Posts: 6,350
Likes: 0
From: San Jose Area
After reading threads on here and the RX-7 board, I went with RP. Redline seems to be notchy until warmed up.
I bought 4 qts for RP Max Gear for $8.99 a bottle with free shipping from this place. http://www.mustangtuning.com/royal-p...-gear-oil.html
I bought 4 qts for RP Max Gear for $8.99 a bottle with free shipping from this place. http://www.mustangtuning.com/royal-p...-gear-oil.html
Just a question...why is AMSOIL never brought up in this community when synthectics are being discussed.
I personally will never switch unless I get a car that has some confliction with AMS.
I personally will never switch unless I get a car that has some confliction with AMS.
Registered User
Joined: Jun 2002
Posts: 3,086
Likes: 1
From: Misinformation Director - Evolv Chicago
Originally Posted by mac11
Just a question...why is AMSOIL never brought up in this community when synthectics are being discussed.
I personally will never switch unless I get a car that has some confliction with AMS.
I personally will never switch unless I get a car that has some confliction with AMS.
I realize most people either use RP or redline, but what kind of oil do people use specifically. Our manual trans takes gl4 or gl5 and our diff takes gl5, both with 75W-90.
Do people use the gl5 or the gl4 in the transmission?
do we need hypoid friction modifiers?
Would these be the best for RP and Redline?
RP:
diff: max gear 75W-90
trans: Synchromax 75W-90
or is it max gear for both the trans and dif?
Redline
diff: 75w-90 gear oil or 75-90 NS?
trans: MT-90 or 75W90 NS?
sorry i reposted this question to this thread thought the heading was more appropriate
https://www.rx8club.com/showthread.p...=1#post1627544
Do people use the gl5 or the gl4 in the transmission?
do we need hypoid friction modifiers?
Would these be the best for RP and Redline?
RP:
diff: max gear 75W-90
trans: Synchromax 75W-90
or is it max gear for both the trans and dif?
Redline
diff: 75w-90 gear oil or 75-90 NS?
trans: MT-90 or 75W90 NS?
sorry i reposted this question to this thread thought the heading was more appropriate
https://www.rx8club.com/showthread.p...=1#post1627544
Last edited by bsteimel; Nov 24, 2006 at 08:30 PM.
Thread
Thread Starter
Forum
Replies
Last Post
