You are losing me I'm not gonna lie.. Your "opinion" is that Aisin transmissions, not Toyota(Toyota does not fully own or control that company fyi) can run on substandard oil, and last forever, but the engines when driven beyond a reasonable level will simply not be up to the task🤔. The 2UZ-FE in particular is bulletproof. I think you just don't like Toyota's, and your communication skills are a little lacking.
At no time do you present any tangible data, just your opinion of a manufacturer as a whole. This site use to be about data
and real world experience. Lately personal opinions backed by zero professional experience seem to be the prevailing theme....
"I think you really missed my point.
Toyota WS will be fine in that transmission. It is not like Toyota makes that fluid, and even if it does, it will be fine. Toyota is an expert in making uber, super, duper boring vehicles. They even admitted that that they lost know-how in last two decades so that is why they decided to go with BMW on last Supra (among other things they buy from BMW).
But Toyota made that decision, to make vehicles like that, and they make money and that is it. Using WS is perfectly fine. I stated what I stated because all this drama around WS. First of all, if D6 for example is such a good oil, why they do not get approvals from transmission manufacturers? That is same thing they do with engine oils, and in reality they cannot get approvals. Redline recently did that with their 5W40 oils, acquired approval from BMW< but it turned out they had to develop completely different oil and it is mediocre oil at best compare to other BMW approved oils. So unless that transmission fluid says that it is approved by Toyota, I first will put WS in my Toyota once I hit 60k when I will change fluid in transmission, TC and differentials.
My point is there is too much talk about something that is pretty straightforward and above all, we are talking about vehicles that are purposely developed as not bulletproof, but dumbproof.
As for Toyota as manufacturer, I still claim Yugo had some things better executed. When I owned Yugo and installed aftermarket audio system I did not have to roll down window to stop rattling noise in the doors. I actually have to do that with 2015 Sienna"
We get it, you don't like Toyota. How about contributing to the thread by keeping it on topic. I'm going to be nice and state that you are hard to understand. I'm not sure why, but let's just leave it at that.
Redline D6 is a very capable ATF. I've used it in many applications. I didn't like the shift characteristics in my 06 Tacoma though vs WS. But in a GM 4L60E the stuff is amazing. But again you have made it clear you also don't like Redline. Oh we've established you like Yugo though🤔... my head hurts. Back to the topic at hand
