The existing subtask says "both 29 ft-lb". That is the front differential figure, not these two units. Per the Toyota/Lexus service data: - Transfer case — drain and fill plugs: 27 ft-lb (36 N·m) - Rear differential — drain and fill plugs: 36 ft-lb (49 N·m)
29 ft-lb is wrong for both. Over-torquing the transfer case plugs is how the aluminium case threads get pulled.
The washers are two different parts. The transfer case plug uses an aluminium flat gasket; the rear diff uses the shaped metal gasket 12157-10010. Do not buy one number assuming it fits both — a wrong washer on a 0.45 L case is a slow leak onto the exhaust.
| Source | Price | Size | Effective $/litre | Notes |
|---|---|---|---|---|
| AMSOIL Severe Gear 75W-85 (amsoil.ca) | $30.09 retail ($24.69 member) | 1 US qt = 0.946 L | $31.81 | Free shipping only over $130 — a 2-quart order pays shipping |
| Red Line 75W-85 GL-5 (odparts.ca, Laval QC) | $36.00 (reg $39.60) | 1 US qt = 0.946 L | $38.05 | Only 3 left in stock as of today |
| Toyota Genuine LT 75W-85, 1 L (Country Hills Toyota parts) | $38.93 (MSRP $46.47) | 1 L | $38.93 | This is the factory fill part |
| Lexus/Toyota US online (toyotapartsdeal 08885-02506) | $44.61 USD | 1 qt | n/a | Not worth cross-border |
At the quantity needed (~0.95 L total — 0.45 L transfer case + 0.5 L rear diff), shipping decides the winner: - 2 × AMSOIL = $60.18 + shipping (under the $130 free-shipping threshold) → lands near $75-80 - 2 × Red Line = $72.00 + shipping from Laval → near $85 - 2 × Toyota LT 1 L at the dealer counter = $77.86, no shipping, and you collect it the same visit
So the dealer is no longer the expensive option once you only need two litres. The earlier assumption that the parts counter would be marked up does not hold at 2 quarts.
Buy 2 × Toyota Genuine LT 75W-85 (1 L) at a Lexus/Toyota parts counter — factory fill, no shipping, no wait, ~$78. If AMSOIL is already in a cart over $130, the Severe Gear at $30.09 is the cheaper fluid and is a legitimate GL-5 75W-85 substitute.
Whether they have the aluminium transfer-case plug gaskets on the shelf at the same time — those are consumables and are frequently not in stock.
Sources: amsoil.ca gear oil listing; odparts.ca product page (stock counter); Country Hills Toyota parts (TOYOTA GENUINE LT 75W-85 1L, $38.93 CAD); Toyota/Lexus spec sheet for the NX 200t transfer case and rear differential plug torques.