ATF Change

[sseaman]

Looking for some quick help or confirmation, i do not have my manual with me at work and was going to pick up atf on my way home to swap out tonight. I see from searching Mobil1 or Valvoline seem to be well thought of , and it looks like i will need a minimun of 4 quarts, i think i will get a few extra just in case.

thanks

 

[Ting]

Looking for some quick help or confirmation, i do not have my manual with me at work and was going to pick up atf on my way home to swap out tonight. I see from searching Mobil1 or Valvoline seem to be well thought of , and it looks like i will need a minimun of 4 quarts, i think i will get a few extra just in case.

thanks

I just did 3x tranny flush. I also use Mobil1 ATF, and you will need 4 quarts. I looked over everywhere, and the only place I can find M1 ATF is at Walmart.

 

[sseaman]

I hate walmart but they do seem to be the only place to carry a wide range of mobil1 fluids

 

[CJF]

My '91 needs 6-7 quarts when dropping the pan and replacing the screen...

Curtis

 

[97 FZJ80]

I replace the ATF fluid with every oil change. You will need more than 4 quarts, but less than 5 quarts to replace the amount drained from the transmission drain plug. This is for the later model A343 transmission.

 

[boarcrz]

I change mine with every oil change and it takes about 6 qts.

 

[450 Cruiser]

If you're lucky enough to have or find a graduated container large enough to hold 4 quarts (1 gallon) or more, this is an easy way to measure what came out and replace accordingly (assuming total volume to start with was correct )

I've drained my A343F by plug about 4X now and have measured the drained volume anywhere from 4.1 to 4.4 quarts. Not sure, but I think temperature, viscosity, loss, and possibly cleanliness of fluid has caused this variation.

I use Chevron ATF with ISO syn that you can pick-up at shucks/kragan for .59/quart with coupon.

 

[RavenTai]

it temperature that makes the variation, it is always 4 to 5 quarts for me also (later A343 trans) I start with 4 and add after driving around and checking the fluid, for a wile I did M1 ATF at every oil change, after the first few I dropped the pan cleaned it and the screen, now that it is mainly M1 I just do it every once in a wile to keep the fluid fresh.

 

[cruiserdan]

Anybody notice a pattern here? I do and it matches my experience.

440/442 guys need 6-7 quarts and 343 guys need ~4 quarts.

 

[CJF]

Anybody notice a pattern here? I do and it matches my experience.

440/442 guys need 6-7 quarts and 343 guys need ~4 quarts.

Yup...

 

[sseaman]

thanks for the help, i replaced just shy of 5 quarts, the old fluid looked bad, how soon show i wait to repeat this process? I do not drive it much so if i wait oil changes it could be awhile.

thanks

 

[Spydaz]

Ya know, why do you guys change the tranny fluid so much, i know its good PM, but if the fluid looks good and does not look/smell burnt then why waste money? I have had the original Tranny fluid since new, looks and smells like new. I have never overheated the tranny or have done any serious offroading.

I do however plan to baseline all fluids at the 70k mark. I onlty have 66k miles on this truck.

 

[450 Cruiser]

Ya know, why do you guys change the tranny fluid so much, i know its good PM, but if the fluid looks good and does not look/smell burnt then why waste money?

I'll respond with another question: Why let it get to the point that it smells burnt/looks bad before changing it when changing it (via drain plug) is a VERY easy and VERY inexpensive way to keep it fresh...and you're under your rig changing your motor oil in the first place?

Like you say, it's good PM.

 

[Spydaz]

I'll respond with another question: Why let it get to the point that it smells burnt/looks bad before changing it when changing it (via drain plug) is a VERY easy and VERY inexpensive way to keep it fresh...and you're under your rig changing your motor oil in the first place?

Like you say, it's good PM.

Now thats what i needed to hear, a nice kick in the old arse will make me do it!

I just pull the plug and let it drain all out, then just put the plug back in and fill until stick says full?? Don't i have to do it when its warm or take a reading when its warm?

And its 4.0-4.5 quarts, and can i switch to M1 Synth that way or do i need to do a Pan drop??

 

[450 Cruiser]

Now thats what i needed to hear, a nice kick in the old arse will make me do it!

I just pull the plug and let it drain all out, then just put the plug back in and fill until stick says full?? Don't i have to do it when its warm or take a reading when its warm?

And its 4.0-4.5 quarts, and can i switch to M1 Synth that way or do i need to do a Pan drop??

I believe warm is the preferred method. If system volume is correct to start, determine and replace drained volume. Usually 4-5 quarts for A343F (read above posts). I can't comment on mixing synth with dino, I'll leave that to our oil experts.

 

[Spydaz]

Cool, i will use dino unless i have to flush the whole unit out to run M1.

 

[Ting]

thanks for the help, i replaced just shy of 5 quarts, the old fluid looked bad, how soon show i wait to repeat this process? I do not drive it much so if i wait oil changes it could be awhile.

thanks

I bought a few gallons of regular inexpensive ATF for flushing purpose. Then I put expensive M1 ATF. It will be a sin to flush with expensive M1 ATF.

 

[RavenTai]

Cool, i will use dino unless i have to flush the whole unit out to run M1.

see my post above and more complete posts in the archives, you can swap over using the incromental method, 4.n q m1 every oil change.

that is how I swaped mine over and all is well with my transmissin

 

[gsandd]

Where is the drain plug for the AT located at on the 97LX450? I would appreciate any help.

 

[sseaman]

it should be about a foot behind the engine oil pan