• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Gear oil question?

  • Thread starter Thread starter mcrmxr
  • Start date Start date Apr 10, 2004
M

mcrmxr

New Member
Sep 1, 2003
8
0
0
Apr 10, 2004
#1
  • Apr 10, 2004
  • #1
I just replaced the stock gears in my 99 convertible with 4.10 gears. I put the oil in that the manual calls for (80-90) for break in , but what oil should I use after that. Any suggestions or recomendations?
 

todd4566

Founding Member
May 24, 2000
1,075
0
36
California
Apr 10, 2004
#2
  • Apr 10, 2004
  • #2
80-90w again. I would put in a synthetic type too (Mobil, Redline, etc). Don't forget friction modifier if the oil isn't mixed w/ it already.
 

Blakers01GT

Master of the Clubhead
Founding Member
Sep 21, 2001
2,110
0
0
Brown Deer, WI
Apr 10, 2004
#3
  • Apr 10, 2004
  • #3
I just use the Motocraft 75-140
 

twogts4us

15 Year Member
Apr 1, 2004
4,188
12
79
Dunedin, FL
Apr 11, 2004
#4
  • Apr 11, 2004
  • #4
Royal Purple here!
 

KJ Hoppus

New Member
Mar 18, 2003
1,008
0
0
Elk Grove CA
Apr 11, 2004
#5
  • Apr 11, 2004
  • #5
todd4566 said:
80-90w again. I would put in a synthetic type too (Mobil, Redline, etc). Don't forget friction modifier if the oil isn't mixed w/ it already.
Click to expand...

or Motorcraft
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Apr 11, 2004
#6
  • Apr 11, 2004
  • #6
Yeah, the Motorcraft 75w-140 is a synthetic read diff. fluid. However, you can buy the other brands for cheaper. Why that is, I dont know.
 
You must log in or register to reply here.

Similar threads

S
Oil cooler delete 4v 4.6 1999 cobra mustang
  • sami12
  • Feb 24, 2026
  • SN95 4.6L Mustang Tech
Replies
5
Views
280
SN95 4.6L Mustang Tech Feb 25, 2026
GOvert
G
M
4.10 gears = 200,000 miles ?
  • michaelleewebb
  • Apr 1, 2026
  • SN95 V6 Mustang Tech
Replies
5
Views
175
SN95 V6 Mustang Tech Apr 2, 2026
michaelleewebb
M
J
Engine Coolant leak from oil filter
  • jr273
  • Mar 26, 2026
  • SN95 4.6L Mustang Tech
Replies
9
Views
206
SN95 4.6L Mustang Tech Mar 31, 2026
squeak93
351w aluminum oil pump?
  • Kid wita 5oh
  • Oct 28, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
161
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 28, 2025
Mustang5L5
B
2001 v6 New compressor issue
  • badmech
  • Apr 30, 2026
  • SN95 V6 Mustang Tech
Replies
0
Views
70
SN95 V6 Mustang Tech Apr 30, 2026
badmech
B
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?