How often replace Transmission and Differential Fluid
#2
Senior Member
Join Date: Apr 2004
Location: Sydney Australia
Posts: 558
Likes: 0
Received 0 Likes
on
0 Posts
Well according to the FSM every 60 000 miles. I just replaced both mine after 50 000 km's and actually put in good quality oil and the shifting feels a hundred times better than before.
I'm running Red Line MT90 for tranny (2.5 litres) and Redline 75-90W (1.3 litres) for my diff.
I'm running Red Line MT90 for tranny (2.5 litres) and Redline 75-90W (1.3 litres) for my diff.
#4
Rotary Enthusiast
Thread Starter
Join Date: Jul 2003
Location: Toronto
Posts: 823
Likes: 0
Received 0 Likes
on
0 Posts
Well according to the FSM every 60 000 miles. I just replaced both mine after 50 000 km's and actually put in good quality oil and the shifting feels a hundred times better than before.
I'm running Red Line MT90 for tranny (2.5 litres) and Redline 75-90W (1.3 litres) for my diff.
I'm running Red Line MT90 for tranny (2.5 litres) and Redline 75-90W (1.3 litres) for my diff.
#6
Moderator
iTrader: (7)
Gear oil life depends on how hard the car is driven, how hot the tranny gets, and whether any moisture has condensed inside.
Changing any less than 30k is kinda silly unless you're rebuilding the tranny. Change it by 60k though since old / dirty oil is not good.
You'll need to lift the car to change the oil. I run a long tube from the fill port into the engine bay and fill through there.
Dave
Changing any less than 30k is kinda silly unless you're rebuilding the tranny. Change it by 60k though since old / dirty oil is not good.
You'll need to lift the car to change the oil. I run a long tube from the fill port into the engine bay and fill through there.
Dave
Trending Topics
#8
Racecar - Formula 2000
The concensus seems to be that Neo is the best:
https://www.rx7club.com/showthread.p...ight=neo+75W90
https://www.rx7club.com/showthread.p...ight=neo+75W90
#9
Senior Member
Join Date: Apr 2004
Location: Sydney Australia
Posts: 558
Likes: 0
Received 0 Likes
on
0 Posts
After you manage to jack up the car and drain everything, I simply used some garden hose and cut about 1 metre of it. Surprisingly it fit perfectly in the filler plug and I just ran it from the engine bay down the back of the engine and then down tranny tunnel.
Other end I used a funnel and filled the whole thing up in about 5 minutes. Just make sure to wash the hose as the last thing you want when shifting is bits of pebble or what not in there.
Fill about 2.6 litres then take the hose out and let the oil overflow. Once it stops then your done. The diff was alot easier as the plugs are above each other.
Trust me its not that hard.
#12
Moderator
iTrader: (7)
i personally don't think it makes a lot of difference between the premium synthetics. But I do believe it helps to use a GL-4 in the tranny and a GL-5 in the diff. For the tranny the best options are Amsoil MTG (GL-4) and Redline MT-90.
Neo covers both applications but I don't think it's exactly the best for both. To make a long story short, what's good for the hypoid gear of the diff is not good for the synchros in the tranny. So in the future I'll be using different fluids in each.
Dave
Neo covers both applications but I don't think it's exactly the best for both. To make a long story short, what's good for the hypoid gear of the diff is not good for the synchros in the tranny. So in the future I'll be using different fluids in each.
Dave
Thread
Thread Starter
Forum
Replies
Last Post
1993, 3rd, axle, change, diff, difference, differential, fluid, generation, replace, rx7, rx7club, service, tranny, transmission