Transmission or diff slips while taking slow sharp turns

i just changed the rear diff fluid on my 2010 Tacoma red sport which has the LSD of course. I put 3 quarts of valvoline full synthetic

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90 in it, i was reading up on LSD and also put in trans x also I changed the ATF fluid as well to valvoline max life since the WS fluid is supposed to be horrible. Everything was good for a couple miles but then when I take a turn at low speed feels and sounds like either the diff is slipping or the transmission is somehow in neutral then eventually grips and starts working again. I put in the specified amounts and until the fluid overflowed. 3 quarts gear oil and also a little over 3 quarts of ATF fluid. I flushed out the diff fluid because I kept reading up on what was wrong and came to find out my year does not have mechanical LSD so I did not have to put in the friction modifier, so I flushed the rear diff and decided to go with a different gear oil, so I went with the valvoline full synthetic 75w-140. This still did not help with the situation. So I'm aiming at the transmission at this point. Does anyone know of what maybe happening and what a fix maybe? I seen you have to check the level between 115 and 130 degrees F which I did not check at a specific temperature at the time.

 

For the benefit of the doubt , your truck was running when you checked your transmission fluid level ?
https://www.tacomaworld.com/threads...th-pics-for-second-gen-4-liter-trucks.289913/

 

Did not do that, I added what was specified by the Haynes manual, kept adding until the fluid started to pour out the overflow plug and capped off. Transmission was somewhat warm but was not operating temperature

 

definitely not your rear diff. Even if it was a mechanical LSD type with a fucked up oil change that killed the clutch pack in the rear diff, there is in no way shape or for it can "slip" the way you are mentioning.... a killed clutch pack in a LSD will just yeild a conventional open diff.


Needless to say you messed something up with your trans.

1. STOP DRIVING IT.
2. Follow the proper procedure to fill it up.
3. Fill it up with OEM Toyota WS fluid.
4. At this point because you put 3 quarts of something else in the trans... you are going to need to do a full drain and fill. 11-13qts.

 

Engine has to be running when filling trans. Its low!

 

Got it, thanks guys I'm going to put some more in tomorrow and run through some tests. I'll check back in tomorrow.

 

I swear i read this same thing posted by brandon something or other.... his was trans fluid issue too.

 

Follow this for tranny.
https://www.tacomaworld.com/threads/how-to-drain-refill-automatic-transmission.63851/

 

Everything is good to go now! Added about another quart pretty much. Waited till the temp got between the two temps while running and in neutral, then added till I seen it pour out the overflow hole! Thanks everyone!

 

Also I have noticed the truck shifts a hell of a lot better with the valvoline max life than the WS fluid.

 

Lots of people here running the valvoline maxlife ATF, I haven't heard of anybody having any issues with it in these transmissions.