A few weeks back we had this Scion FR-S, the DriftDR in the shop for a service that’s critical to every Scion FR-S and Subaru BRZ on the road for the car’s longevity. We’ve told you before about how to fix the Notchy Shifter in the FR-S / BRZ, and this car is in for the very service that the fix entails. This is something we recommend for every FR-S and BRZ on the road, not because of some bs nonsense the guy at Jiffylube might tell you, but because the cars honestly and truly need this done like a Rattlesnakebite victim needs antivenom.
If you like shifting and enjoy a properly functional diff, don’t overlook changing your differential oil and transmission gear oil.
Under the hood, we found the car had been equipped with a Grimmspeed Intake for Scion FR-S to help the FA20 breathe better, but really we just wanted to take a photo of an airbox we hadn’t seen before.
We do like that this is a sealed airbox style intake and utilizes the factory cool air ductwork for a colder incoming aircharge.
Into the air we go!
Under the car we found a GReddy Supreme Exhaust for Scion FR-S, which sounded pretty good, but that’s not really what we’re here to see. Just behind the muffler can, where the system kinks to one side is the car’s rear differential, and we need to access the round drain plug you can just barely see here.
Some of the symptoms that indicate you’ll need to change your transmission oil and differential oil: Notchy, weird, difficult shifting – whatever word you’d use for “not normal operation”. This is a problem for ALL Scion FR-S and ALL Subaru BRZs and has persisted through the entire production run, from the first 2012s to the fresh off the truck 2016s– doesn’t matter if you just took delivery five seconds ago and are just backing the thing off the trailer or if you’ve been on the road for years.
Here are the specific symptoms that mean your gear oil needs attention:
*First gear is clunky
*2nd feels notchy
*3rd may be difficult, especially when shifting below 3000rpm.
Fortunately the cure for the problem is both easy and pretty inexpensive.
Simply changing the differential and transmission oil will do wonders for both making shifting smoother as well as extending the life of your transmission.
We recommend using Motul 300 Gear oil for differential and transmission oil changes, as we’ve put together in this convenient differential oil change kit for FR-S and BRZ. Why Motul? Motul is an extremely high grade, fully synthetic oil specifically engineered for the demanding conditions of keeping race engines and gearsets lubricated.
You might be wondering “well what proof do you have the oil in the transmission and differential is the problem?” Well, just take a look at the next few photos and see for yourself.
Here’s the differential drain plug being removed.
OH MY GOD, EW. Look at how hairy that SOB is with metal shavings. It’s not pretty.
It smells like a dead whale in the shop every time we change gear oil–it’s foul smelling stuff, so it’s probably best you let us change it for you rather than choke on the smell in your own garage.
With the Motul in the transmission, the gearshifts already feel much smoother.
Here’s what you’ll need to do it yourself:
10mm Hex Key socket
Fluid transfer pump if not using Motul Gear 300
Bucket or oil drain pan to catch used oil
API GL-3 or better rated fluid for the transmission (2.2L) (like Motul Gear 300 Diff & Gear Oil)
API GL-5 fluid for the differential 1.3L (like Motul Gear 300 Diff & Gear Oil)
Rear Differential Drain Crush Washer
Rear Differential Fill Crush Washer
2 Crush Washers for transmission
Here’s an excerpt from your Owner’s Manual, courtesy of FT86Club that outlines the capacities and the procedure to be factory correct.
Don’t feel like doing it yourself, or beyond your comfort level?
If you need to have your Scion FR-S Transmission Oil Changed or need your BRZ Differential Oil Changed, we can do that for you here if you’re in Southern California, come by our install shop, Mod Auto, where our experienced, professional staff can change your transmission and rear differential oil change for you – call us 714-582-3330 to make an appointment or click here to use our online Appointment System. Visit ModBargains.com or email Scion FR-S / Subaru BRZ specialist Robert aka the #STAYCRUSHING Rocket Bunny Widebody FR-S [email protected] or call us at 714-582-3330 x8004 to get more information.
Story by Nicholas Gregson
Want to read more? Check out a few of our other FR-S/BRZ related posts:
Quick Snap: Scion FR-S on Forgestar F14s
April ’14 COTM: Shutter’s Scion FR-S
Scion FR-S Gets Upgraded with Carbon Fiber Aero Parts
13 Great Exterior Mods For Scion FR-S & Subaru BRZ
6 Mods To Get The Most Out Of Your Scion FR-S / Subaru BR-Z
Quick Snap: Scion FR-S on Klutch SL5 Wheels at Sundown
Product Spotlight: Scion FR-S/BR-Z Duck Bill Style Trunk Spoiler
Full Blown Scion FR-S Turbo Kit Now Available for Installation at ModBargains
Scion FR-S GReddy High Performance Intake: Installed Photos
Quick Snap: Subaru BRZ Gets ST Coilovers & Enkei RPF1 Wheels
Expert Review: Plug-and-Play E85 Power for FRS/BRZ with Vishnu Openflash Tablet