Manual transmission fluid replacement

[Kitt]

Just wondering, how often should I change my manual transmission oil?

[MUSKOKA800]

I change mine at 50,000 kilometer intervals and use a full synthetic 75W90.
Shifts like a dream!

[Kitt]

will do so, last time I changed it with the clutch/plate/bearing replacement

[fnkngrv]

I typically will make sure that when I change mine (usually once a year) I perform a flush as well. Yes for most people my interval is way overkill, but I would much rather change it once a year than risk anything with how the car is driven at 7k rpm for long durations at high speeds. So back to the flush it does help with moving any broken down portions of the current fluid.

Sent from my SCH-I545 using Tapatalk

[MUSKOKA800]

I typically will make sure that when I change mine (usually once a year) I perform a flush as well. Yes for most people my interval is way overkill, but I would much rather change it once a year than risk anything with how the car is driven at 7k rpm for long durations at high speeds. So back to the flush it does help with moving any broken down portions of the current fluid.

Sent from my SCH-I545 using Tapatalk

With what do you flush?
I'd personally only use the same oil as I plan to re-fill with.

[fnkngrv]

I use AMSOIL Transmission and Engine Flush

Sent from my SCH-I545 using Tapatalk

[Kitt]

so, is it safe to do transmission flush that often?

[fnkngrv]

I have had no issues with it but do not recommend for normal driving

Sent from my SCH-I545 using Tapatalk

[Kalispel]

Seems like Toyota OEM products would be your safest bet in this case, since it is supposed to be formulated with exact Toyota mechanical specifications in mind.

[fnkngrv]

The problem with the OEM fluid is that you run into the issues with shifting into reverse. The c50 is known for wear issues especially with the syncros as it is so the better the protection the safer you will be. Also for example AMSOIL, RP, Redline, etc meet or exceed API standards so they are perfectly fine to use.

Sent from my SCH-I545 using Tapatalk

[SirDigby]

Seems like Toyota OEM products would be your safest bet in this case, since it is supposed to be formulated with exact Toyota mechanical specifications in mind.

most of the time dealerships buy this oil in bulk from the near by oil/gas company. this is for the m/t that has 75-90 gl-4. it's kinda generic, but ok.