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Author Topic: ATF change  (Read 7177 times)

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Doctor Gollum

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Re: ATF change
« Reply #15 on: 12 December 2018, 05:53:02 »
The fluid expands with heat... The level is designed to reflect normal operating temperature  ;)
Check it cold or roasting hot and the optimal level will be dangerously low or high...
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Webby the Bear

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Re: ATF change
« Reply #16 on: 12 December 2018, 07:35:19 »
Thanks guys. I always give it a run before checking the level.
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Re: ATF change
« Reply #17 on: 12 December 2018, 07:36:46 »
Sorry just to clarify.....with the engine idling this at the same time is warming the atf?
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Re: ATF change
« Reply #18 on: 12 December 2018, 08:18:22 »
Quote from: Webby the Bear on 12 December 2018, 07:36:46
Sorry just to clarify.....with the engine idling this at the same time is warming the atf?
It will, but a brief drive is better as you can run it through the gears without stressing anything and this will ensure that you get fluid throughout the box :y
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Webby the Bear

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Re: ATF change
« Reply #19 on: 12 December 2018, 08:29:21 »
Quote from: Doctor Gollum on 12 December 2018, 08:18:22
Quote from: Webby the Bear on 12 December 2018, 07:36:46
Sorry just to clarify.....with the engine idling this at the same time is warming the atf?
It will, but a brief drive is better as you can run it through the gears without stressing anything and this will ensure that you get fluid throughout the box :y

Thanks dg 👍 as said this has nothing to do with changing/ topping up atf.

For ages I’ve been letting car warm up for 2-5 minutes. I was curious to know if I was running a half warm engine on a cold box 😂 as said pure curiosity 👍👍👍
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Re: ATF change
« Reply #20 on: 12 December 2018, 08:35:30 »
If nothing else the box, a big lump of metal, is bolted to the engine, also a big lump of metal... As one warms up, so will the other and don't forget that the fluid is also running through the radiator... So as the engine and coolant warm up, so does the box and fluid ;)
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Kevin Wood

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Re: ATF change
« Reply #21 on: 12 December 2018, 09:32:54 »
ATF will gradually warm up at idle, but to get all the fluid thoroughly up to temperature, and to ensure there are no air pockets in the gearbox or cooler (which has a thermostat IIRC) you need to drive it.

When you're driving it, the fluid forms the connection between engine and wheels in the torque converter, so that helps it warm up a little. ;)
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Webby the Bear

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Re: ATF change
« Reply #22 on: 24 December 2018, 18:46:15 »
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