Question concerning accurate cvt fluid measurements

[nofriction]

Hi all, I have a question about transmission fluid, temperature, and accurate measurements to ensure good maintenance. Given the issue of change in volume of cvt fluid due to temperature change, could I eliminate this PITA and simply weigh the old and new fluid? Or I guess more accurately, does the weight of cvt fluid vary with temperature? I thought about this after seeing English bakers weighing flour instead of measuring by volume. Thanks and appreciation.

 

[georgemiller]

Why not just put back what you take out?

 

[D60]

That horse is dead. Read this and stop kicking it. Do what you're comfortable with.

A

Thread 'Are we over exaggerating the perfect ATF fluid level? thermal expansion seems to think we are'

Apr 13, 2024

hello, i recently changed the atf fluid in my 2015 toyota. it has the u760 tranny and the u760/u660 have no dipstick so they have a certain level check that happens between 104f-113f and some docs say the fluid check can be done between 95-113f. The drain hole/port has a little fill tube preinstalled to do the fluid check. When the temp is around 104f, the instructions say to take out the drain plug and to drain and word for word based on the toyota document "Wait until the fluid flow slows and only drips come out"

depending on how much fluid comes out, a tranny could easily be at...

• apollo18
• Replies: 148
• Forum: ATF, Differential, Trans, Brakes, P/S

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[nofriction]

That horse is dead. Read this and stop kicking it. Do what you're comfortable with.

A

Thread 'Are we over exaggerating the perfect ATF fluid level? thermal expansion seems to think we are'

Apr 13, 2024

hello, i recently changed the atf fluid in my 2015 toyota. it has the u760 tranny and the u760/u660 have no dipstick so they have a certain level check that happens between 104f-113f and some docs say the fluid check can be done between 95-113f. The drain hole/port has a little fill tube preinstalled to do the fluid check. When the temp is around 104f, the instructions say to take out the drain plug and to drain and word for word based on the toyota document "Wait until the fluid flow slows and only drips come out"

depending on how much fluid comes out, a tranny could easily be at...

• apollo18
• Replies: 148
• Forum: ATF, Differential, Trans, Brakes, P/S

• 
• 

"That horse is dead. Read this and stop kicking it."

thanks. you didnt answer the question, sound helpful or kind. you rock bro.

 

[slacktide_bitog]

What kind of car is it?

With Honda, you can just do the job cold and refill with the same amount you drained.

With Subaru, you need the scan tool to take the temperature of the CVT fluid

 

[JeffKeryk]

Of course replacing what you drained, whether by weight or volume, assumes the prior fill was correct.
I just bite the bullet and follow the procedure. I do use a cheapo temp gun to read the temperature... And level? Well, close works for me.

Just follow the procedure as best as you can and be done with it. You'll be happy once you're done.