• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Explorer ST Forum and Explorer ST community dedicated to Explorer ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Explorer ST Forum today!


Fluids Change - Need clarification

G

Grabber

Member
#1
Messages
95
Reactions
40
Points
17
Location
Gurnee, IL
Vehicle
2020 Explorer ST
#1
Hey Folks,

I have searched for the last hour on this and keep getting conflicting information.

Trans fluid - Some threads say you need 10 quarts, some 12, etc. Let's say my fluid has never been changed at 52K miles, how many quarts do I need to buy to drain and refill?

Front/Rear diff - I am seeing 2-3 quarts for the front diff, and 4-5 quarts for the rear diff of two different fluids. Can someone clarify how many for the front and rear?

I am buying all Amsoil, and right now for fluids based on the conflicting info, I am going to spend well over $300 on fluids.

Want to be sure of what I need so I don't overspend.

Thank you!
-Chris
 

FORZDA3

FORZDA3

Member
U.S. Air Force Veteran
#2
Messages
489
Reactions
326
Points
67
Location
Gloucester, VA, USA
Vehicle
2021 Explorer ST
#2
Last edited:
C

Cdubya

1000 Post Club
#3
Messages
1,709
Reactions
852
Points
262
Location
NE Ohio
Vehicle
2020 Explorer ST
#3
Front diff capaity is 0.6 qt so just buy a quart (it's expensive).
Transfer case: Buy 2 qts.
Rear differential: Buy 2 qts.
Trans: you may only spill 6 qts but Mercon ULV is not commonly found so I would have extra on hand. There are also synthetic aftermarket ULV oils available. Not sure what Amsoil equivalents are out there or if they are any that are OE spec.

Here's the oil/capacity list:
Automatic Transmission: Motorcraft® MERCON® ULV Automatic Transmission Fluid 12.6 Qt
Transfer Case: Motorcraft® MERCON® LV Automatic Transmission -AMERCON® LV 1.1Qt
Front differential: Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant 0.6qt
Rear differential: Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant 1.9qt
 

OP
G

Grabber

Member
Thread Starter #4
Messages
95
Reactions
40
Points
17
Location
Gurnee, IL
Vehicle
2020 Explorer ST
Thread Starter #4
Thanks for the info.

Does this look right?

Trans/Transfer case: Amsoil synthetic automatic trans fluid - 12/QT (Case price)
Front diff: 75/90 Severe Gear - 2 quarts
Rear diff: 75./140 severe gear - 2 quarts
 

OP
G

Grabber

Member
Thread Starter #6
Messages
95
Reactions
40
Points
17
Location
Gurnee, IL
Vehicle
2020 Explorer ST
Thread Starter #6
Motorcraft® MERCON® LV Automatic Transmission Fluid XT-10-QLVC - 2 Quarts
Motorcraft® MERCON® ULV Automatic Transmission Fluid XT-12-QULV - 12 Quarts
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant XY-75W140-QL - 2 Quarts
Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant XY-75W85-QL -1 Quart

Going with OEM to simplify things, provided the cost is similar to Amsoil.
 

OP
G

Grabber

Member
Thread Starter #7
Messages
95
Reactions
40
Points
17
Location
Gurnee, IL
Vehicle
2020 Explorer ST
Thread Starter #7
Motorcraft fluids are about $260 on Amazon.

That includes the one I missed, which is the XL-12 transfer case fluid.

Thanks again for the help.
 

C

Cdubya

1000 Post Club
#8
Messages
1,709
Reactions
852
Points
262
Location
NE Ohio
Vehicle
2020 Explorer ST
#8
Check with RockAuto first
 

C

Cdubya

1000 Post Club
#9
Messages
1,709
Reactions
852
Points
262
Location
NE Ohio
Vehicle
2020 Explorer ST
#9
Grabber said:
Motorcraft® MERCON® LV Automatic Transmission Fluid XT-10-QLVC - 2 Quarts
Motorcraft® MERCON® ULV Automatic Transmission Fluid XT-12-QULV - 12 Quarts
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant XY-75W140-QL - 2 Quarts
Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant XY-75W85-QL -1 Quart

Going with OEM to simplify things, provided the cost is similar to Amsoil.
Click to expand...
You need 2 qts of the 75W85 and only one qt of the 75W140.

Mercon ULV is not synthetic. Triax ULV or Valvoline ULV (both synthetic) are what I've been going with lately.
 

C

Cruising68

1000 Post Club
#10
Messages
1,640
Reactions
1,193
Points
262
Location
Chicago, IL, USA
#10
Must use something that meets spec. I used motorcraft ULV first change then switched to LiquiMoly Top Tec 1850. Fully synthetic and officially meets spec. Always liked Valvoline too but got a deal.


Sent from my iPhone using Tapatalk
 

OP
G

Grabber

Member
Thread Starter #11
Messages
95
Reactions
40
Points
17
Location
Gurnee, IL
Vehicle
2020 Explorer ST
Thread Starter #11
Cruising68 said:
Must use something that meets spec. I used motorcraft ULV first change then switched to LiquiMoly Top Tec 1850. Fully synthetic and officially meets spec. Always liked Valvoline too but got a deal.


Sent from my iPhone using Tapatalk
Click to expand...
Thanks for your help.

Bought all motorocraft from a local dealer. Came out to $220 for everything.
 

jwuonog

jwuonog

Member
#12
Messages
221
Reactions
89
Points
27
Location
Jessup, MD, USA
#12
Cruising68 said:
Must use something that meets spec. I used motorcraft ULV first change then switched to LiquiMoly Top Tec 1850. Fully synthetic and officially meets spec. Always liked Valvoline too but got a deal.


Sent from my iPhone using Tapatalk
Click to expand...
Have you noticed any improvements since switching to LiquiMoly?
 

LuxST

LuxST

Member
#13
Messages
73
Reactions
15
Points
7
Location
South Carolina
Vehicle
2022 Explorer ST
#13
Cruising68 said:
Must use something that meets spec. I used motorcraft ULV first change then switched to LiquiMoly Top Tec 1850. Fully synthetic and officially meets spec. Always liked Valvoline too but got a deal.


Sent from my iPhone using Tapatalk
Click to expand...
How was Valvoline? It’s so cheap compared to motocraft. $9 compared to $31 for a quart (rear diff)
 

C

Cruising68

1000 Post Club
#14
Messages
1,640
Reactions
1,193
Points
262
Location
Chicago, IL, USA
#14
LuxST said:
How was Valvoline? It’s so cheap compared to motocraft. $9 compared to $31 for a quart (rear diff)
Click to expand...
I would not hesitate to use their full synthetic gear oil. I ran it in my trucks at my business for 30 years.


Sent from my iPhone using Tapatalk
 

LuxST

LuxST

Member
#15
Messages
73
Reactions
15
Points
7
Location
South Carolina
Vehicle
2022 Explorer ST
#15
Cruising68 said:
I would not hesitate to use their full synthetic gear oil. I ran it in my trucks at my business for 30 years.


Sent from my iPhone using Tapatalk
Click to expand...
Will 75W-90 be ok to use instead of the 75W-85? I don’t have enough gear head knowledge to know the pros/cons lol
 

C

Cdubya

1000 Post Club
#16
Messages
1,709
Reactions
852
Points
262
Location
NE Ohio
Vehicle
2020 Explorer ST
#16
LuxST said:
Will 75W-90 be ok to use instead of the 75W-85? I don’t have enough gear head knowledge to know the pros/cons lol
Click to expand...
Should be fine. I used Redline 75w90 synthetic for the rear diff just because that's what i already had.
 

C

Cruising68

1000 Post Club
#17
Messages
1,640
Reactions
1,193
Points
262
Location
Chicago, IL, USA
#17
Yeah what he said, no problem


Sent from my iPhone using Tapatalk
 

LuxST

LuxST

Member
#18
Messages
73
Reactions
15
Points
7
Location
South Carolina
Vehicle
2022 Explorer ST
#18
Similar question for the front differential. Will 85w-140 be ok to use? :LOL:
 

C

Cruising68

1000 Post Club
#19
Messages
1,640
Reactions
1,193
Points
262
Location
Chicago, IL, USA
#19
jwuonog said:
Have you noticed any improvements since switching to LiquiMoly?
Click to expand...
Not really. Shifted pretty good with the tune and I change it more frequently than most. I think it’s more about fresh fluid than which fluid a song as synthetic and meets spec.


Sent from my iPad using Tapatalk
 

You must log in or register to reply here.

Explorer ST Posts



Top