Ford Trucks: Quickly Determine Which Differential You Have and If Friction Modifier is Required
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- Опубліковано 26 вер 2024
- In this video we illustrate how to identify the different Ford Differentials and which ones require friction modifier to be added to new fluid when servicing the rear Differential. In the end remember this: You can add friction modifier to any axle and no harm will be done but if you don't add friction modifier and the differential ends up being a limited slip unit, damage will occur. So if you are still unsure if your axle requires friction modifier after this video it is better to be safe than sorry and just add one entire bottle.
Ford Friction Modifier (most axles require only one bottle)-
amzn.to/2EajfDD
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The information, demonstration and any content contained in this video is for informational purposes only. The user and BSG Automotive (hereinafter “FordTechMakuloco”) makes no warranty, express or implied, regarding the effectiveness or safety of the contents of this video. In no way should the contents of the video, including the tools used, be repeated or tried by anyone. Viewers should only seek the help of a trained professional located at a licensed auto repair shop for any fix, modification, alteration, or any change to their vehicle. FordTechMakuloco shall not be liable for any injury, damage, or loss to any person or property that may result from use of the tools, equipment, or any content contained in this video. In addition, there is no way to guarantee that the video is not altered or modified or is not in the final form submitted by FordTechMakuloco and therefore, FordTechMakuloco does not warrant that the video is unaltered or not modified. The links on this video to products are for informational purposes only and in no way are an endorsement of the safety or effectiveness of the particular product. Viewers understand that anything contained in this video or linked to or from this video is the sole responsibility of the viewer and in no way provides an express or implied warranty as to the safety or effectiveness of any linked tool, product, or video. Therefore, viewer agrees to release, waive, and discharge FordTechMakuloco or anyone affiliated with FordTechMakuloco, from any and all liability, claims, demands, actions, and causes of action whatsoever arising out of or related to any loss, damage, or injury, including death, that may be sustained by the viewer, or to any property belonging to viewer, regardless of whether the loss is linked to the use of the contents of this video, or otherwise and regardless of whether such liability arises in tort, contract, strict liability, or otherwise, to the fullest extent allowed by law.
In the end remember this: You can add friction modifier to any axle and no harm will be done but if you don't add friction modifier and the differential ends up being a limited slip unit, damage will occur. So if you are still unsure if your axle requires friction modifier after this video it is better to be safe than sorry and just add one entire bottle with your new axle fluid. Ford Friction Modifier (most axles only require one bottle)-
amzn.to/2EajfDD
Have you seen the damage done first hand? Thank you great video!
Yes
@@FordTechMakuloco what took the brunt of damage, the friction discs? Tens of thousands of miles maybe 100,000. I was fascinated with this additive in our posi rear ends. Thank you
@@FordTechMakuloco hello my friend, how do I know what type of oil does my f150 use on the differential??? Is there a way to know, or if you can tell me it will be great.. thank you.
I used royal purple on my diff and didn't realize it needed friction modifier I got about 200km before needing a new diff
You have some of the best videos on UA-cam. Straight to the point without unnecessary drama or music. Nicely done.
Damn good information! He's on here helping America!
"...This right here is what they call a conventional differential or OPEN differential and is NOT because the cover's off..."
. . . that made me chuckle, LOL. 🤣
Good work, Mr Brian ! 👍😎
One of the best changes I made to my 2010 was swapping the factory limited slip with an Eaton trutrac. Works awesome!
What gear oil did you use?
@@noontimewhale I use a shell mineral oil. It specifically calls for mineral based gear oil only. No synthetic allowed or it won’t function properly.
@@kevinoneill41 My truck is RWD only. I have never gotten stuck with it, but don’t go doing any true off-road either. But I do live in Canada with bad winters and with the rear Trutrac and snow tires; I have no issues in driving through unplowed roads that stop other vehicles. I found it to be a very worthwhile upgrade. I have tested it where one wheel is on ice and the other on clear road and the truck accelerates as though both wheels were on dry pavement. I can tell when it may be time to change the diff fluid because I will start to feel a bit of a binding when doing sharp turns.
Only negative I would say for it is the fact you can’t run synthetic diff oil and in the cold I can feel how much thicker the oil is before it warms up. And in general, I would say the truck took a small hit in fuel economy because of that.
Nice vid thanks. Basically in a nutshell if both wheels turn the same way you need friction modifier added in when changing the rear differential fluid
I recently got myself a new-to-me 2011 F150 XLT EB, and I have found your videos to be the most informative of them all. I'm not an automotive nerd by any stretch of the imagination, but I am a big time DIYer and your videos are so very helpful!
Perfecto. Simple and easy to understand. I have a 2015 EcoBoost and I find your videos helpful from time to time! Preventive maintenance! The only problem I’ve had with my truck in its 135k is the darn Lariat dual climate actuators and the expansion valve for the A/C in the firewall has gone out twice.
Great video, used the fluid change vid to change the fluid in my 14 F350 SD and now my 05 F150. Each have a (what I call ) a timing wheel on the left side. The 14 looks to be the electronic lock Dif. I bought the 150 with a 3.55 limited slip. Nice to know that there is no harm done by adding friction modifier!
Your knowledge and experience is much appreciated, thank you.
Thanks for that. I never “actually” knew what the modifier was doing when added. And now I also know to just it regardless. 👍🏼🇨🇦
Finally I know what I have for rear diff thanks for another well explained instructional.
Great information, as always. I already knew about trac-loc and open diffs, but not about electronic locking diffs.
Nice!! Never knew an electronic diff would only spin one wheel. Cool!
Only until you lock it in
Changed my differential oil on my 2010 F150 and got further confused about the friction modifier because I thought I had the locking diff, but it was a locking Transfer Case that connects the front dif to the rear dif. Never had so much overthinking involved in an oil change before! Mine was the FX4 which was advertised as a limited slip so I went with the friction modifier. Like he says, the modifier won't hurt if it doesn't need it, but if you're trying to debate ordering some for your change Ford advertises the heck out of the locking rear differential but makes almost no mention of the Transfer Case lock, and they look the same on the 4H 4L switch. I referenced the video you made about the differential change and you showed it as an electronic locking but the electric switch looked different than in this video with the newer model.
Thanks for all your video's hoping my F150 will last years and years. 2010 FX4 5.4L Super Crew
Love this channel and don't own a Ford or truck.
Same here. I wish there was a GM version of this guy.
Buy a ford 🤷♂️
So thankful for your channel. Thank you for taking time out of your day to educate us on these procedures. You've saved me so much time and money.
Great information as always....thanks! BTW, I loved that unintentional pun-"They call this an open differential but not because the cover is off"!
Lol
Great information, I’m looking at changing the oil, and was thinking how to identify my 4x4 rear axle.
Absolutely great explanation.. thanks for passing the knowledge on...
First, great channel! I own 3 Fords in Rockford, IL. This channel keeps them running! I have a newly acquired 03 F150 5.4 2V with a rear diff that has an overlabel on the rear axle and steel tabs on the diff cover that calls out FEHP oil only 75W90. I think this may be rebuilt rear diff? Original calls for 75W140. Also noticed an actual gasket material is used, versus gasket maker. Can you give me some advice on this scenario? Jeremy
Thank you so much, I was going crazy trying to figure this out, 01 f150 super crew - rear V941A 3L55 975. Your insight and knowledge help me determine min is a limited slip and I need that additive.
Hi Brian ...I've have learned so much from you I feel I should send you a check...lol..they
don't teach some the things you've shown us the way you do ... I Enjoy your videos... Cheers 🍻🍻🍻🇺🇸🇺🇸
Great job, Brian! Showing how to quickly tell the difference between the diff. diffs!! So to speak!! Lol
The manual is great reference, but ford might have made changes for the type oil that goes in the rear diff, if you go to the dealership, using the vin # , they would tell you the latest and greatest fluid type, with the rear diff there has been some changes in type of fluid. Great Content
Man I needed this video. Learned me a few things. Thanks
Another great informative video. Thanks for taking the time to show how to get things done right.
Is there a way to check for play and see if the clutch packs are getting worn out when the diff cover is off? How many miles will they typically last- when properly maintained. Another great video btw. 👍🏼
Thanks for the great info I have used some of your videos that have helped my fix my fords. Thanks for all your videos will have to do my timing chain on my EcoBoost soon will be using your videos to help with the installation
Thanks for the info! So what's better - electronic locking or a limited slip dif? On a side note - I'm guilty too, but manual says never to jack up the car by the rear dif :)
......so,... I changed my gear lube a couple months ago, and recently it started grabbing when accelerating from a turn. I THOUGHT it was an open diff, but the wheels turn the same direction when suspended, so.... I ordered the friction modifier just now. Will I see any long term damage from driving this way?? I honestly did not think it was a limited slip.
Man, what a timely video.....!!
Dump that XL-3 in there immediately and hopefully with any luck it will take.
@@FordTechMakuloco Yes, I put the magic juice in a couple weeks ago- it seems to be MUCH quieter now. Thanks SO MUCH for all your great videos- I have learned a TON!!
Thanks for another great video. I replaced the differential fluid in the F350 super duty and now I need to replace the rear axle dust shields and park brake. I see people are packing the floating rear wheel bearings and say the manual recommends this. What Motorcraft grease is compatible with the Motorcraft Synthetic 75-140 Rear axle lubrication? Should I just use the leftover axle lubrication on the bearings during reassembly and forego the grease?
Phew...I added limited slip modifier to an open diff. Rookie mistake but thanks for the clarification.
Great video, i like it when people show a video of the differentials working. That's all i wanted. ^^
Great demonstration! Your channel is very informative.
Thank you for sharing!
Thank you for this video! I found out I have a limited slip in my truck!
My manual empized never raise the rear axle with a floor jack under differential. The cover could become distorted or cracked. I did it because I saw several videos showed it and it is now leaking fluids by the buckets. I was very careful, but I now have to buy a new cover and hope that will cure the problem.
You raise it by the pumpkin which is part of the axle housing never by the cover. Do it this way and you will never have a problem.
Super!! Learned something new today,checking my differential tomorrow.👌👍🏻
I have a 2017 F350 DRW with the (3k) axle. how much friction modifier is required? I can't find any info on this.
Thanks for the videos. They save me tons of money!
Great Video Brian. 👍🏻 as always
Could you do a video on replacing coolant on the 6.7 diesel engine for both the engine as well as the fuel sides.
You videos are outstanding
Just what I was looking for. Thank you so much.
Also, H-9 will be on door tag. Limited Slip.
Hi I appreciate your videos very helpful thanks, I have an open differential 3.31 gears. What parts do I need to buy and replace to have a 3.73 Limited Slip ?
I always check As each has a different weight rear axle fluid as well. Some take 75W-90 others take 75W-140 Plus the Modifier...
Master chief, would you say that those taking 75W90 are possibly rebuilt? Seeing that original 03 F150 5.4l 2V calls out 75W140? Jeremy. (I just acquired this truck and rear axle has overlabel and tabs on diff case cover that call out 75W90 only)
Glad I watched this before popping off my diff cover. Added friction Modifier to cart. Any issue with using Valvoline 85-140? Should have watched your other videos before purchasing gear oil...
As always ,great video.
Very educational.
Thank You
Brian great explanation very informative nice video
Good information...concise and to the point...keep the videos coming!!
Nice Video, Someone might become confused, when looking at their differential and seeing an electrical connector. They might assume that they have an electric locking differential, when in fact they are looking at the connector for the ABS brake sensor. Assuming they do the easiest way to drain oil by putting truck on ramps and dropping the cover. they would never know.
The abs sensor is never on the side of the diff case. The e-locker connector is on the side of the diff case as He explains it in the video.
Thankyou.. I had mine serviced they found 3 chipped teeth and they the shop wanted to replace the whole rear end. I've think that maybe I'll just wait and see. The truck has 220k on it but has been babied since new
Another great video, thanks for taking the time to share your knowledge.
Thank You I Love These Videos Your The Ford Guru 👨🏼🔧👨🏼🔧
you are just the best men ! thank you so much for that info !!!
What if you put the additive into a conventional diff if you are not sure? Is that safe?
yes
Great video like always... thank you for all your help!!!
My rear end clutches are giving out looks like fun to change
Thank you for another great video Brian .Blessings brother 🙏🏽
Hello, thanks for your videos! one question, i have a 15 f150 5.0 with a conventional rear differential, can i install an electronic rear differential taken from another f150 same year but EcoBoost?
Really informative without using the doctor wording.
Awesome video. Very helpful. Thanks.
Good tips once again!👍
Love the videos brian hey just woundering if you can make a video on a 7.3 powerstroke diesel front crank seal replacement tks
Hi first thank you for these great videos!!! Renews my faith in people and mechanics...2nd do you have a video on ABS + TCS + BRAKE light on 2009 Screw Lariat 5.4 Triton 120k most recent tune up completed... Thank you for your help
Thank you for this video.
Like always, very good video. Thanks
I've got an eddie bauer 2000 ford expedition with the sensor on it to activate the A4WD magnetic clutch...
As Always, GREAT content 👍🏼
I’ve got a Ford E-series. At Slow, parking lot speeds, WHEN TURNING, I hear a rhythmic (noise) from the rear, like a hydraulic Jack screw, if you’re familiar with that sound. Is this a ‘normal’ characteristic (LSD) ?
It doesn’t necessarily sound like something’s ‘wrong’, I just like to know what noises are in my vehicle’s ..,.
Thank You !
No not normal, the most common noise is clutch chatter at low speed tight turns due to failed clutch packs.
@@FordTechMakuloco thank you. I don’t know enough to make an informed diagnosis, and not any shops in area gave me confidence (in them) to diagnose LSD, so I’ll start with oil change. 🤷🏻♂️
Yes, without the FM the truck will let ya know it's not been added. Taking off from stop sign turning left or right will cause the rear wheel to skip and jump harshly. I had the bottle but dude forgot to add it!! If ya want something done right ya do it yourself!!!
I see where I can get a limited slip differential put in my truck, I have open differential. Any videos on how to do this? Is it very complicated or require specialized tools? I can't see it being that bad but maybe it is?
I have a 2010 with an open dif. Can I swap it with an LSD without any problems with the traction control?
My 2002 SD 7.3 has an electrical connector going into the rear diff. Now I know why. Thanks
No yours is an ABS sensor.
@@FordTechMakuloco ok, thanks
What if I have an electronic locking differential and both tires spin; what would that mean?
Thx again Brian...as I walk to my truck...lol
A true master technician
Will it matter if I put 75 x 1 40 and this contains limited slip additive in the rear end thank you let me know please
My 2019 expedition 4x4 rear end looks nothing like that. It has a drain and refill plug. And the cover is in very tight quarters. I was at ford and asked about the 75w-85w oil for the rear end and its like $38 a quart. Can I use 75w-90w instead? Much cheaper and available. I also have the 3.73 ELSD Axle. My wheels turn opposite so no need for the modifier. Dealer said I needed it. I'll take it back. Great Video
That's cuz the expedition has independent rear suspension, it does have a differential in the center would have shelves coming out each side going to the wheels
What about the front axle does that need a friction modifier?
Normally never until recently on some of the newest Ford models with the Torsen differential they require 4oz yes
now on the electric locker
when engaged
is fully locked like a spool
or it just on / off limited slip diff
its locked
Great video keep up the good work.
My wifes rear is limited slip.
Ozzstar my wife just blew out her rear seal
@@Cfass1 lol
HAHAHA! Ozzz!😂😂
I hope you use friction modifier
😂😂😂😂
Thank you!
What's up Makuloco, question I have a 01 F150 lariat 5.4L with the off road 4x4 package front diff. 8.8" and rear 9.75" with a 3.55 ratio and I want to install 38" or even 40" tires, I'm gonna upgrade gears to 4.88 and wanted to beef up the front and rear diff I was going Detroit locker rear and wanted to know what can I do to the front 8.8 diff so I can continue to use the vacuum selector set up, what do you recomend to do in the front? Thank you in advance, I've used your videos for so much man your awesome thanks for the channel great help, btw I'm in Puerto Rico.
My manual says to use 75/90 in front and rear differential. But I have heard different from other people is 75/90 synthetic correct in both?
Why do I have the electronic wiring as on the first example but when I jacked up the rear end 1 tire went forward the other backwards??? I guess I don’t need to add friction modifier...
Already I got a question for you I want to put a locker in the front on my F150 with 2010 I have an LS in the rear what locks are you scared for the front
I have a 2004 ford f-150 with the 4.6 one wheel peal and want to put a posi rear gear in it but I need to know the rear end size.
Valvoline full synthetic oil state “limited slip” ... means no friction modifier is required?
i have a 2007 ford explorer sport trac 4.0 ltr. i need help on how to remove the cover on the rear differential , so i can change out the fluid and gasket. I can not seem to find any videos on my year sport trac to reference.
I went to the dealer they told me I need the FRICTION modifier but when my truck was off the ground I notice I manually spin the tire, they go the oposité way, so mine it’s an OPEN differential, but I spin the the tires while on park, I mean not really spin but the play the tires ll have. Do I need to have in neutral.?
I have a "limited slip in my 05 F150. It never worked from the factory. Dealer said it was working. WRONG. No traction even on wet grass.
I think my POS needs "grip enhancer".
Have you run into complaints about these "limited slip" Not working?
They kind of have to heat up in order for the clutch packs to grab, if it's been neglected, or is just high milage worn, you'll get that "not really working" performance.
In your opinion, how dependable are the electronic locking rears???? Also, do you know what voltage it take to lock and unlock them?? I ask as a hot rodder for future fun... lol...
Hello sir I have a 1999 ford f150 I have the clutch plates behind the spider gears which means Trac lock but was wondering why some diffs have the little zig zag metal bar in between it but some don't. was wondering why if you could inform me I would appreciate it. Thanks
Friction modifier or not.... around 90-100000 miles.....the clutch packs on a Ford differential will probably need rebuilt.... especially if the truck sits alot...or install a Dana or Eaton differential.
I have a question I have a 2004 Ford F150 FX4 with a 9.75 differential the tag says to use 75w 90, can I use a 75w 140 synthetic with the modifier?
2012 f150 opened rear end 3.73, what weight of oil, older thinner stuff or heavier stuff not much towing? Better mpg? Used valvonline 75w140 with additive modifier be cuz it was cheapest, making noises and maybe getting too hot???
do they make open diffrentials for the 2004-2005 ford explorer chomp style diffrentials
Good Stuff,Great Tips😄👍🏿
Is an open differential the same as a limited slip and do both not require a friction modifier. I have a 2005 f150 with a little whining going on weather I'm on street or dirt roads..I've also put on brand new tires and the noise was there before the tire change.
Hey Brian, is pulling the axle to replace the rear (axle) bearings the same on both diff types? I suspect you have to be extra careful not to push out a spider gear with the locking diff.
It is the same both ways you just need to be more careful with the non locking conventional diffs whereas a locking diff spider gears will stay in place.