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Would a member be able to confirm if the Rear Differential Filler Plug & Drain Plug are the same part / part number or different (90341-18032Rear Differential Filler Plug)
I could be wrong so cross reference these parts beforehand.
About to perform differential fluid change, (Lexus IS 350 - 1.35L), and wanted to confirm if TOYOTA OEM GL-5 75W-85 (Part 08885-02506) is fully synthetic. Back of can states "using synthetic technology". Unsure if can has since been updated and may no longer states this. Also located part TOYOTA 00289-75140 - SAE 75W-140 DIFFERENTIAL GEAR OIL FULLY SYNTHETIC. Unsure what vehicle / transmission would require it.
Pro tip: Remove the fill plug first because if you can't remove it you can't fill it from the drain hole. If you can't remove it stop and consult a pro.
USED Red Line Fully Synthetic75W90 GL-5 gear Oil part 57904 (Red Line states the 75W95 doesn't any additional protection over the 75W85 GL-5, but the 75W85 may offer very minor gas mileage benefit. Produced to satisfy vehicles requiring use of a 75W95 fluid) https://www.redlineoil.com/75w90-gl-5-gear-oil
API Service Class GL 5+
Vis @ 100°C, CSt 16
Vis @ 40°C, CSt 112
Viscosity Index 155
Pour Point, °C -45
Pour Point, °F -49
Brookfield Viscosity, Poise 1100 @-40°C
Red Line Fully Synthetic 75W85 GL-5 Gear Oil part 50104 https://www.redlineoil.com/75w85-gl-5-gear-oil
-API Service Class GL 5+
-Vis @ 100°C, cSt 11.5
-Vis @ 40°C, cSt 68
-Viscosity Index 163
-Pour Point, °C -45
-Pour Point, °F -49
-Brookfield Viscosity, Poise 300 @ -40°C
What's the consensus of which of these weight options is best to use? The 75W85 GL-5 Gear Oil part 50104?
I could be wrong so cross reference these parts beforehand.
9034118032.... Diff Fill Plug
9034118035.... Diff Drain Plug....Has the magnet
1215710010
Gasket seems to be the same for both.
That's it! Thank you MikeF! Forgot that the drain plug had the magnetic tip (photo 1), and filler plug does not (Photo 2.).Believe both use a 10mm allen key socket for removal;
Believe the part numbers you provided are correct; Part Number: 9034118035 (FILLER(FOR TRANSFER); FOR REAR DIFFERENTIAL CARRIER COVER; Part Number 9034118032 drain plug ; FOR REAR DIFFERENTIAL CARRIER COVER;
Part Number:1215710010(drain plug) Differential Drain/Fill plug Crush Washer gasket
What's the consensus of which of these weight options is best to use? The 75W85 GL-5 Gear Oil part 50104?
Believe 75W90 would offer slightly more protection due to being slightly thicker and more resistant to oxidation than 75W85 however, both oils will effectively satisfy the differential needs. Car manufactures have reduced fluid viscosities to improve their CAFÉ numbers.(Corporate Average Fuel Economy),and also believe lower viscosities are used to satisfy tighter operating tolerances between moving parts.
If I understand correctly, multigrade gear oils (include two numbers separated by a 'W'.) "W" means winter suitability and indicates the flowability of the oil at cold temperatures. Gear oils with 75W indicates performance at 0°C and remain flowable up to -40°C.(-40°F). The number "90" refers to the kinematic viscosity of the gear oil at 100 °C (212 °F)
What's the consensus of which of these weight options is best to use? The 75W85 GL-5 Gear Oil part 50104?
I always gravitate towards the lubricant application with the narrowest viscosity spread that meets my climate/usage. That means fewer additives and more lubricant doing the job. That is a much more sheer-resistant formulation over time, especially in a differential with high shear loads all the time on a small fluid volume.
I would pick an 80w-90 given you are in GA and don’t need the severe winter protection of 75w. Between those two only, the 75w-85 is fine. It will not have much if any viscosity modifier and do the same job as the 75w-90 w/o much risk.
Wanted to confirm that differential gear fluid isn't similar to brake fluid, where you wouldn't want to use stored brake fluid due to moisture, contaminants etc. and advised to discard and not use.
I've left over 75W90 synthetic differential gear oil that was stored in original bottle, and thought I'd be able to use remaining amount without issue.
[QUOTE=ELexis;11683857]That's it! Thank you MikeF! Forgot that the drain plug had the magnetic tip (photo 1), and filler plug does not (Photo 2.).Believe both use a 10mm allen key socket for removal;
Believe the part numbers you provided are correct; Part Number: 9034118035 (FILLER(FOR TRANSFER); FOR REAR DIFFERENTIAL CARRIER COVER; Part Number 9034118032 drain plug ; FOR REAR DIFFERENTIAL CARRIER COVER;
Part Number:1215710010(drain plug) Differential Drain/Fill plug Crush Washer gasket
Thank you for confirming Mike!!! 35178-30010 (washer for transmission drain bolt (referenced by Yellow arrow) and the check over flow bolt (used to puge additional trans fluid after trans reaches operating temperature, referenced by White arrow).
03-08-24, 01:23 PM
