Changing the Differential / Transmission Oil
New Member
Joined: Oct 2003
Posts: 180
Likes: 0
From: Vienna, VA
Since the plates don't rub against one another, they're not clutches. It's more a torque converter than a clutch, according to that diagram. And, as you point out, they're in a sealed can, away from the gear oil, living in their own silicone heaven.
Asterix
Asterix
Is a suction gun absolutely required, or can I simply use a piece of flexible tubing pushed into the fill hole, with a funnel and have the fluid poured into it? This is the method I have used on previous vehicles...
Thx
Thx
Originally Posted by Diesel350
So for the base Z will I see a difference by changing the differential oil to something like Motul 300 or Redline?
Originally Posted by kingrukus
Is a suction gun absolutely required, or can I simply use a piece of flexible tubing pushed into the fill hole, with a funnel and have the fluid poured into it? This is the method I have used on previous vehicles...
Thx
Thx
Originally Posted by kingrukus
Is a suction gun absolutely required, or can I simply use a piece of flexible tubing pushed into the fill hole, with a funnel and have the fluid poured into it? This is the method I have used on previous vehicles...
Thx
Thx
Originally Posted by vo7848
You might be able to get the diff done, but there's not alot of room by the tranny to get the container higher than the filler hole. The pump is only a couple bucks. No sense in doing it ghetto rig style...
Originally Posted by kingrukus
Yup, I think i will just go with the pump. My previous cars have been FWD, so that I could route the tubing up through the engine bay and funnel it from there...thus gravity would act on the fluid and feed the tranny pretty well...I am obviously restricted height wise with the G, so I suppose I cannot do the same.
Good call. Did you see the write-up I did a few pages back?
Originally Posted by vo7848
Good call. Did you see the write-up I did a few pages back?
Originally Posted by vo7848
Good call. Did you see the write-up I did a few pages back?
What a nice thread...
I recently had a Carbonetics CF differential installed in my G35 Coupe, so I needed to change the fluid after the break in (200 miles). I purchased a siphon tool at advanced Auto Parts for about $14. It worked well, but leaked around the fittings a bit.
I also bought a Nissan differential cover... because it has fins to cool the diff and my 4.08 gears... and maybe because I think it looks neat...
Where did you guys get your suction pumps?
I recently had a Carbonetics CF differential installed in my G35 Coupe, so I needed to change the fluid after the break in (200 miles). I purchased a siphon tool at advanced Auto Parts for about $14. It worked well, but leaked around the fittings a bit.
I also bought a Nissan differential cover... because it has fins to cool the diff and my 4.08 gears... and maybe because I think it looks neat...
Where did you guys get your suction pumps?
Originally Posted by USN HM 350Z
how are you liking the Redline in the tranny? I have about 10K on the RP and I am thinking of switching to the redline (already bought it)
I changed the factory tranny fluid out with the synthetic Redline brand. Personally, I didn't see any difference in shifting smoothness. It feels identical to the OEM fluid. I think all the hype people make about how "smooth it feels" is just hype. Don't get me wrong, it's not bad, it just doesn't make the tranny shift any different than the OEM fluid would.
Now what goes on inside the tranny is a different story. It kinda like switching your motor oil out from conventional to synthetic. The driver never really feels anything different during acceleration or who quiet the engine runs, but we all know that the synthetic engine oil is benefitting the engine internally and offering better protection than it's conventional counterpart.
So I would say, given the characteristics of synthetic tranny blend vs. conventional blend, I would chose the synthetic blend.
Now what goes on inside the tranny is a different story. It kinda like switching your motor oil out from conventional to synthetic. The driver never really feels anything different during acceleration or who quiet the engine runs, but we all know that the synthetic engine oil is benefitting the engine internally and offering better protection than it's conventional counterpart.
So I would say, given the characteristics of synthetic tranny blend vs. conventional blend, I would chose the synthetic blend.
Registered User
Joined: Jul 2006
Posts: 1,289
Likes: 0
From: California
This was a useful thread. I'll be doing it this weekend switching my nismo lsd to the correct motul fluid. I don't have 4 jack stands so I'm going to attempt to do it without lifting it, I'm able to fit under the car to the diff so hopefully all works out.
Just changed my tranny fluid this morning to the Redline mixture. soooo easy to do when you have a car lift. took me 18 minutes.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
Originally Posted by USN HM 350Z
Just changed my tranny fluid this morning to the Redline mixture. soooo easy to do when you have a car lift. took me 18 minutes.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
Originally Posted by USN HM 350Z
Just changed my tranny fluid this morning to the Redline mixture. soooo easy to do when you have a car lift. took me 18 minutes.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
I was running the RP fluid previously, and I have to say I do notice a difference in shifting with the redline. It feels like a new tranny. The RP was good once it warmed up, but the redline was good from the start.
Might have to check that out. I currently have the RP and when warm its aswsome, but when its cold its kinda notchy.
Registered User
Joined: Jul 2006
Posts: 1,289
Likes: 0
From: California
Alright I did it today. I ended up having to jack up one side of the car for a moment to tighten the drain plug (torque wrench was too long) but I was able to do the rest with the car on the ground.
I used the Motul 90PA for my nismo lsd and it made a HUGE difference.
I think I'll be smelling gear oil for a week though.
I used the Motul 90PA for my nismo lsd and it made a HUGE difference.
I think I'll be smelling gear oil for a week though.
Last edited by cavallino33; Dec 30, 2007 at 12:50 PM.