Can I just guess temperature when changing Clio auto trans fluid

[K clio]

Sorry I wanted to delete my OBD question but can't find delete, as I read codes need specialist Renault readers.

When changing auto transmission fluid on my Mk2 1.4 2004 Clio auto, can I get the temperature roughly right by maybe running engine for 5minutes and shifting through the gears for this 5 minutes to bring it up to roughly the right temperature for a level check (50 degrees I think) ? Do you think 5minutes would be about right or does the temperature matter that much?

 

[K clio]

I'm wondering if the benefit of new auto gearbox oil outweighs getting the level slightly wrong when level checking because I cant accurately measure the temperature of it?
(Manual transmission fluid sets the level when cold, it's only when auto it says to warm it up to 50 or 60 Deg)

 

[K clio]

I read on another forum, a 5 or 6 mile drive should bring it up to about 50 degrees. Anyone know?

 

[Djw John]

You can get infra red thermometers pretty cheap, buy one and point it at the bottom of the box. It'll tell you the temp.

 

[K clio]

I saw that on a YouTube video and just assumed they would be too expensive. Just checked now on Amazon and they are only £20. Thanks.

 

[K clio]

Got this for £15 on Amazon. Deiscovered my fridge was not cold enough!
https://www.amazon.co.uk/dp/B09K39S9J1/?tag=cliospnet01-21