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The Scion FR-S is now sold as the Toyota 86/GR86 (and shares its 6-speed manual with the Subaru BRZ), so any correctly spec’d fluid for the current car works in the FR-S — it’s the same gearbox. Toyota specifies a straight 75W, GL-4-rated fluid, not a 75W-90, which rules out a lot of generic “manual transmission fluid” search results. Below are seven real fluids that are either the correct OEM spec or a documented enthusiast alternative, with pricing checked this session; this list stays smaller than a typical parts roundup because getting the GL-4/75W spec right matters more here than product count.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Toyota Genuine MT Gear Oil LV 75W (OEM, PN 08885-81007) | $30-$36 per liter | Amazon |
| 2 | Ravenol MTF-3 75W | $28-$32 per liter | Amazon |
| 3 | Eurol Synthetic 75W GL-4 MTF | $15-$18 per liter | Amazon |
| 4 | Redline MT-90 75W-90 GL-4 | $20-$24 per quart | Amazon · eBay |
| 5 | Motul Gear 300 75W-90 | $26-$34 per liter | Amazon · eBay |
| 6 | Amsoil HP-MTF | $28-$32 per quart | Amazon |
| 7 | Royal Purple Synchromax | $17-$19 per quart | Amazon · eBay |
The picks, in detail
Toyota Genuine MT Gear Oil LV 75W (OEM, PN 08885-81007)
The exact factory-fill fluid Toyota specifies for the FR-S/86/GR86 and BRZ 6-speed manual — a straight 75W, not a 75W-90, and GL-4 rated.
- 75W viscosity (not 75W-90)
- GL-4 rated
- OEM part number 08885-81007
- 1-liter bottle
- Guaranteed correct spec, no guessing on viscosity or GL rating
- What the dealer uses on a factory service
- Priced above most aftermarket synthetics
- Sold only in 1-liter bottles, so a full 2.2L fill needs 3 bottles
Ravenol MTF-3 75W
A German-made synthetic GL-4 gear oil sold in Toyota GR86/BRZ-specific fluid change kits, positioned as meeting or exceeding the factory spec at a lower price than OEM.
- 75W viscosity, GL-4 rated
- Fully synthetic
- Sold in dedicated GR86/BRZ change kits
- Matches OEM viscosity/GL-4 spec without OEM pricing
- Purpose-packaged for this transmission
- Less brand recognition among US DIYers than Redline/Motul
- Availability mostly through specialty retailers
Eurol Synthetic 75W GL-4 MTF
The budget synthetic option in GR86/BRZ-specific fluid kits, correctly spec’d at 75W GL-4.
- 75W viscosity, GL-4 rated
- Fully synthetic
- Sold in GR86/BRZ change kits
- Cheapest correctly-spec’d synthetic in this list
- Still meets the GL-4/75W requirement
- Smaller US brand footprint than Redline or Motul
- Limited independent long-term reviews
Redline MT-90 75W-90 GL-4
A popular enthusiast upgrade, but note it’s a 75W-90 — thicker than Toyota’s 75W factory spec — so it suits track use or hot climates better than a strict OEM-viscosity swap.
- 75W-90 viscosity, GL-4 rated
- Fully synthetic
- Widely available at performance retailers
- Well-documented track record in the FT86 community
- Easy to find at Amazon, Walmart, and specialty shops
- Thicker than factory spec; some owners report notchier cold shifts
- Not a direct OEM-viscosity match
Motul Gear 300 75W-90
A full-synthetic ester-based gear oil favored by some FT86 track/daily drivers, also on the thicker 75W-90 side of spec.
- 75W-90 viscosity, ester-based full synthetic
- Track-oriented formulation
- Community reports cite strong protection under repeated track heat cycles
- Widely available at performance parts retailers
- Same thicker-than-OEM viscosity tradeoff as Redline MT-90
- Costs more per liter than the Ravenol/Eurol GL-4 options
Amsoil HP-MTF
Amsoil’s manual transmission fluid line, cited by some owners as improving shift feel over the factory fill.
- Synthetic manual transmission fluid
- Sold by the quart
- Owner reports of smoother shift feel in forum threads
- Amsoil has a long synthetic-lubricant track record
- Confirm the specific Amsoil product matches the 75W/GL-4 spec before buying, Amsoil sells several MTF viscosities
- Less commonly discussed in FT86-specific threads than Redline/Motul
Royal Purple Synchromax
A synthetic manual transmission fluid marketed as a universal upgrade across many manual gearboxes, including 6-speed applications like the FR-S/86.
- Synthetic formulation
- Multi-application manual transmission fluid
- Sold in single quarts and multi-packs
- Multi-pack pricing lowers cost for a full 2.3-quart fill
- Established name in synthetic lubricants
- Confirm GL rating and viscosity against Toyota’s 75W GL-4 spec before buying, since it’s marketed as a universal fluid
- Less FT86 community documentation than Redline/Motul
Buying tips
- Toyota specifies GL-4 only for this transmission — do not use a GL-5 gear oil. GL-5’s higher-pressure additives can be harsh on the brass synchro rings this gearbox uses, so double-check the rating on anything not listed here before buying.
- The FR-S/86/BRZ takes about 2.2-2.3 quarts (roughly 2.2 liters) — plan bottle count accordingly, since most of the fluids above ship in 1-quart or 1-liter containers.
- This applies to the FR-S and the current Toyota 86/GR86 the same way — it’s the same 6-speed manual gearbox across the model’s history.
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