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Author Topic: Gearbox oil to change or not to change  (Read 3104 times)

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WizardRally

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Re: Gearbox oil to change or not to change
« Reply #15 on: 31 March 2018, 14:10:42 »

Well gearbox oil has been changed.
New filter and gaskets from JPAT.
Just under 5 liters of oil have been changed with Fuchs AFT 4000.
The small sump had no plastic bits inside but the magnet in the 2nd large sump was very gunge.
Couldn't help but poke it with my finger.  ::)
I have taken her for a spin round the block and it seams to change up and down fine but time will tell.
The old oil was rather dark......
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cam.in.head

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Re: Gearbox oil to change or not to change
« Reply #16 on: 31 March 2018, 15:16:43 »

Yes definately a bit dark.no signs of any 'red' in that.when i did mine last year i added a drain plug into the main sump and did 2 more drain /refills afterwards .oil seems to be staying red colour now which would indicate most if the old oil is out.
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Shackeng

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Re: Gearbox oil to change or not to change
« Reply #17 on: 31 March 2018, 17:09:36 »

Annoyingly, the brand new AR35 from a Carlton that I half modified to fit the TD (gearchange shaft needed swapping to left side of box), and which I sold with the TD last year, had a sump plug already factory fitted to the rear sump, I should have nicked the sump for the 3.2. However, that does mean that an auto box Carlton should have the same if anyone knows of scrap ones. :-\
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BazaJT

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Re: Gearbox oil to change or not to change
« Reply #18 on: 31 March 2018, 17:13:41 »

I believe several miles need covering[so depends how far "round the block" is]after a fluid change.However did you re-check the level after your run?
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WizardRally

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Re: Gearbox oil to change or not to change
« Reply #19 on: 31 March 2018, 17:22:58 »

Well i filled it up from cold on stands, Then turned the engine over and run the gears for a few mins to fill the small sump.
Then topped up.
Then on the stands i warmed the gearbox up running all the gears for about 15 mins.
Tried to top up again but it didn't need any extra oil.
Then i took it for a drive around for about 5 miles but not checked the level since.
Not if if i need to check it again before making any longer trips....
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BazaJT

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Re: Gearbox oil to change or not to change
« Reply #20 on: 31 March 2018, 17:27:27 »

Sounds like doing it your way i.e. up on stands and running it for the time you did and cycling the gears should be equivalent to the drive it and re-check method :y
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