Manual transmission & differential gear oil suggestions - Lexus IS Forum
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post #1 of 4 (permalink) Old 11-27-2018, 09:52 PM Thread Starter
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Manual transmission & differential gear oil suggestions

Hey guys new to the forum. Always been a DIYer. I have an 07 is250 RWD w/ manual transmission. I feel some slippage & know that I'm probably beyond overdue to change gear oil in the tranny & differential. Owners manual suggests using "Toyota genuine manual transmission gear oil API GL-5" 75W-90 gear oil, says if using any other gear oil, there's a risk of gear noise & other issues.

Do you guys stick with this manual tranny gear oil? If not, what do you use? & Have you run into any issues?

Same question for differential oil, you guys use the recommended, "Toyota genuine differential LT 75W-85 GL-5 only? Or other stuff? Any issues?
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post #2 of 4 (permalink) Old 11-27-2018, 10:27 PM
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I've used Redline's products for gear oil for the w55 tranny and is3 diff, no issues whatsoever
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post #3 of 4 (permalink) Old 12-03-2018, 02:59 PM
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I only use Redline fluids for Toyota manual transmissions too. The diff isn't so important since I use a clutch type lsd, I just run regular 75W90 fluid in there.

02' MT w/MK3 Supra LSD and no sunroof
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post #4 of 4 (permalink) Old 12-03-2018, 05:57 PM
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Yep 75w90 is the way to go. I work at Toyota and our official Oil Supllier is Mobil1, Gear oil, engine oil, ATF oil all from mobil1

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