Trans/Rear Axle Fluids
07-30-2009, 07:40 AM
#1
Thread Starter
Join Date: Jun 2009
Location: New York
Posts: 2
Trans/Rear Axle Fluids
Hello All!
I have an 87 Mustang GT 5.0 with the T-5 manual. I have owned the car since I bought it new in 87. It's only driven in summer, so the car is in excellent shape.
The transmission and rear axle (8.8") fluids have never been changed. The car has almost 100K miles on it.
Rather than refill the tranny and rear axle with the standard factory-recommended fluids, are there any improved fluids available for each unit?
Since they only use a small amount of fluid, a higher-cost but better fluid would be ok.
Thanks in advance
Steve
I have an 87 Mustang GT 5.0 with the T-5 manual. I have owned the car since I bought it new in 87. It's only driven in summer, so the car is in excellent shape.
The transmission and rear axle (8.8") fluids have never been changed. The car has almost 100K miles on it.
Rather than refill the tranny and rear axle with the standard factory-recommended fluids, are there any improved fluids available for each unit?
Since they only use a small amount of fluid, a higher-cost but better fluid would be ok.
Thanks in advance
Steve
07-30-2009, 07:50 AM
#2
5th Gear Member
Join Date: May 2007
Location: Pittsburgh
Posts: 2,459
Welcome to the forums.
Most people use either Royal Purple or Lucas gear oil. Both have friction modifier included in their formulas. Both are better than generic gear oil.
I use Lucas in both of my cars.
One thing I've noticed, on aftermarket differential covers, is that the Lucas 80w-90 leaks a very, very small amount out of the threads on the differential fill plug when hot.
No worries if you have the stock differential cover, though.
Most people use either Royal Purple or Lucas gear oil. Both have friction modifier included in their formulas. Both are better than generic gear oil.
I use Lucas in both of my cars.
One thing I've noticed, on aftermarket differential covers, is that the Lucas 80w-90 leaks a very, very small amount out of the threads on the differential fill plug when hot.
No worries if you have the stock differential cover, though.
07-30-2009, 08:02 AM
#3
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
Hello All!
I have an 87 Mustang GT 5.0 with the T-5 manual. I have owned the car since I bought it new in 87. It's only driven in summer, so the car is in excellent shape.
The transmission and rear axle (8.8") fluids have never been changed. The car has almost 100K miles on it.
Rather than refill the tranny and rear axle with the standard factory-recommended fluids, are there any improved fluids available for each unit?
Since they only use a small amount of fluid, a higher-cost but better fluid would be ok.
Thanks in advance
Steve
I have an 87 Mustang GT 5.0 with the T-5 manual. I have owned the car since I bought it new in 87. It's only driven in summer, so the car is in excellent shape.
The transmission and rear axle (8.8") fluids have never been changed. The car has almost 100K miles on it.
Rather than refill the tranny and rear axle with the standard factory-recommended fluids, are there any improved fluids available for each unit?
Since they only use a small amount of fluid, a higher-cost but better fluid would be ok.
Thanks in advance
Steve
As far as the transmission goes. use a Mercon based ATF
07-30-2009, 08:50 AM
#4
1st Gear Member
Join Date: Apr 2009
Location: Florida
Posts: 128
Royal purple ATF in the transmission. Yes the manual transmission takes automatic transmission fluid. The rear end I would use Royal Purple 75W90 gear oil.
Last edited by 87GT Drop Top; 07-30-2009 at 09:03 AM.
07-30-2009, 10:33 AM
#6
Thread Starter
Join Date: Jun 2009
Location: New York
Posts: 2
Thanks
Steve
07-30-2009, 09:33 PM
#8
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
honestly, i wont run royal purple ANYTHING in my car.. that stuff is plain garbage
