2025+ 4Runner Diff & Transfer Case Fluid Guide: Part Numbers, Torque Specs & Prices

I priced out my first diff and transfer case service on my 2025 TRD Off-Road Premium (part-time 4WD). I'm planning to DIY it soon: I'm at ~13.4K miles and want to do a break-in change by 15K, then probably every 30K after that. Prices are as of September 2026. Confirm part numbers and capacities for your own VIN.

Disclaimer: I'm not a mechanic, just sharing my research. The aftermarket options follow Car Care Nut's approach: OEM for most fluids, but quality aftermarket gear oil is fine for the diffs and transfer case.

Specs (owner's manual)

Buy: 8 qt diff oil and 2 bottles of transfer case fluid. (Some guides say 6 qt for the diffs, that's the Tacoma number.)



OEM parts (dealer counter prices)


Dealer labor quote for all three services: $292.50, for a total of ~$800 to have the dealer do the job.

Save up to ~30% on OEM parts online

Many Toyota dealer parts sites sell below MSRP, but discounts vary a lot by dealer. Free shipping kicks in over $75. Examples I found:

• Diff Gear Oil LT (00279-DGOLT-01): $30.65/qt (31% off $44.32)
• Transfer Gear Oil LF (00279-DGOLF): $45.77 (31% off $66.20)

Toyota parts sales can stack on top, so it's worth waiting for one if you're not due yet.

Dealers I've found with bigger online discounts:

• Damian Lillard Toyota (McMinnville, OR): https://autoparts.damianlillardtoyota.com
• Santa Margarita Toyota (Rancho Santa Margarita, CA): https://autoparts.santamargaritatoyota.com
• World Toyota (Atlanta, GA): https://autoparts.worldtoyota.com
• Marietta Toyota (Marietta, GA): https://autoparts.mariettatoyota.com
• Toyota of Decatur (Decatur, AL): https://autoparts.toyotaofdecatur.com
• Hoover Toyota (Hoover, AL): https://autoparts.hoovertoyota.com
• Springhill Toyota (Mobile, AL): https://autoparts.springhilltoyota.com
• Tuscaloosa Toyota (Tuscaloosa, AL): https://autoparts.tuscaloosatoyota.com
• Rick Hendrick Toyota (Fayetteville, NC): https://autoparts.rickhendricktoyota.com
• Midlands Toyota (Columbia, SC): https://autoparts.mymidlandstoyota.com
• Sparks Toyota (Myrtle Beach, SC): https://autoparts.sparkstoyota.com
• Gettel Toyota of Lakewood (Bradenton, FL): https://autoparts.getteltoyotaoflakewood.com

Aftermarket options

• Diffs: Amsoil Severe Gear 75W-85. Comes in easy-fill pouches. 8 qt was $165.12 shipped with the $10 six-month member trial (members get free shipping).
• Diffs: Red Line 75W-85 GL-5. About $155 for 8 qt on Amazon (two 4-qt packs), about the same as Amsoil. Comes in bottles, not pouches, so you'll want a fluid pump like a Slippery Pete.
• Transfer case: Red Line MT-LV 70W/75W GL-4. About $25/qt. Red Line's OEM Compatibility tab and data sheet both list: Toyota/Lexus transfer case fluid "Genuine Gear Oil LF 75W" 08885-81080. Not for diffs.

About that part number: 08885-81080 is an older part number for the same Toyota Transfer Gear Oil LF (current part number 00279-DGOLF). Per this BITOG post (confirmed with a Toyota dealer parts manager via Toyota Motor Sales):

• 08885-81080: discontinued (old can)
• 08885-81081: discontinued (plastic bottle)
• 08885-01806: discontinued, replaced 08885-81080
• 00279-DGOLF: current, replaced 08885-01806

I've emailed Amsoil and Red Line to confirm their recommendations and will update with their answers.

Cost comparison (dealer vs. DIY)

OEM gaskets alone won't hit the $75 free-shipping minimum, so the last two rows use dealer counter price for OEM gaskets (~$16.50). Some dealer sites offer free in-store pickup, which gets you the online price instead.

Quick notes

• Viscosity: Toyota specifies 75W-85 for the diffs (owner's manual) and SAE 75W for the transfer case (factory service manual). They're different fluids, so don't swap them. From asking Claude (AI), not the manual: straight 75W is much thinner than diff oil when hot, and 75W-90 is a common diff alternative that's a bit thicker than 75W-85 (Car Care Nut uses it), but it's outside the printed spec.
• If you pay a shop, ask what goes in the transfer case. One local dealer told me they use bulk 75W-90 there.

Torque specs

From Toyota's factory service manual (they match Henry's Differential Fluid Change DIY Guide, which has the full diff procedure).

• Transfer case torque is the same for both transfer cases in the manual (VF2DM and VF4CM).
• Transfer case fill level (factory service manual): 0-5 mm (0-0.2 in) below the bottom lip of the fill hole. Wait about 5 minutes and recheck. The manual warns that too much or too little oil can cause transfer problems.
• *24 mm is what the 4th gen Tacoma and LC250 use; I'll confirm on my 4Runner when I do mine.

How-to videos
Tacoma and Land Cruiser 250 videos (same TNGA-F platform). Use the 4Runner capacities above.

Awesome detail. I think I will not do the DIY route being older and lazy.

Amazing write-up - thanks for taking the time. Bookmarked.

Detailed research and great write-up! Thanks @Gerardo

Thorough and detailed. Excellent job and thanks for taking the time to do this write-up.

Even if some (me included!) prefer to leave it up to the dealer to do these things at least fellow forum members will know how much more they are paying for that luxury.

Wow! Great detail. I was a tech for 40 years and have done all these services many times. They are messy and a lot of the drain/fill holes are very difficult to get to even if you have a lift. I'm 65 now and have the 25 TDR 4runner. After breaking down the costs you listed I will be having my services done by an independent shop. Labor rates can be 25-40% less than at the dealers. Fluid changes is not rocket science so most independents should be able to handle it. (do your research though, all techs are not created equally) On the other hand if you love being a DIYer just so you know your vehicle better and don't mind the mess then go for it.

This is great. Thank you for this post!