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![]() | Home > Maintenance & Modifications > Auto gearbox oil level check |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 ![]() |
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Andy-H Member Since: 07 Jan 2010 Location: Derby Posts: 32 ![]() ![]() ![]() |
Thank you for the info, very usefull. |
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Andy131 Member Since: 10 Dec 2009 Location: Manchester Posts: 2168 ![]() ![]() |
Alex I don't know where you get your info from but thanks for the info from me as well.
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Simon J Member Since: 27 Jul 2019 Location: Norn Iron Posts: 703 ![]() ![]() |
I know this is a positively ancient thread but my daughter is having a 'discussion' about a gearbox leak with the dealer who sold her her FL2 so I want to forearm her about the fluid level checking procedure so that they don’t try and palm her off with some old guff.
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I Like Chips Member Since: 25 Jun 2017 Location: Ascott Under Wychwood Posts: 1513 ![]() ![]() ![]() |
If you do a level test other than the correct way by the book, you get false readings, the box holds fluid in it's internals. With the engine off the fluid sits in the auto box sump at a higher level than recommended.
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Simon J Member Since: 27 Jul 2019 Location: Norn Iron Posts: 703 ![]() ![]() |
Thanks. I understand the technique but I was just curious about the reference to only a small amount of fluid dribbling out if half a litre had been added. Surely if the fluid level had been correct, all of the additional half litre should come back out. And presumably, if none comes out, you need to add another half litre and try again? |
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I Like Chips Member Since: 25 Jun 2017 Location: Ascott Under Wychwood Posts: 1513 ![]() ![]() ![]() |
The small dribble is from the fluid being shaken with the engine running. Adding the half litre brings the level up to over where it should be and will drain out on testing for the correct level, if half a litre is insufficient then more must be added to get the base line within the box.
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Simon J Member Since: 27 Jul 2019 Location: Norn Iron Posts: 703 ![]() ![]() |
Thanks again. Strangely the instructions say “with the engine running a small amount of fluid should drip out of the level plug” but this is after the half litre has been added. So where did the half litre go?
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I Like Chips Member Since: 25 Jun 2017 Location: Ascott Under Wychwood Posts: 1513 ![]() ![]() ![]() |
The half litre is in the box. If you have a leak then it will take whatever has leaked to get to a proper level
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Simon J Member Since: 27 Jul 2019 Location: Norn Iron Posts: 703 ![]() ![]() |
Leaving aside whatever might be wrong with my daughter's gearbox and going back to the LR instructions, if the level is correct, and you add half a litre, then it should all run out. If only a few drops come out, then the level was too low? |
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MotionInc Member Since: 17 Jun 2019 Location: North America Posts: 1338 ![]() ![]() ![]() |
Correct, if nothing comes out or just a few drops, it was already too low (after adding the extra).
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