Member Since: 30 Jan 2012
Location: St Ives
Posts: 877
Not sure I agree with you there, wouldn't a lot of the metal particals be caught by the magnetic drain plug?Club Narpy Torch
“No return to boom and bust†Gordon Brown when chancellor
He has been proved right, now there is only bust!
3rd Oct 2014 7:38 am
armybuck041
Member Since: 05 Dec 2009
Location: Canada
Posts: 30
Nodge68 wrote:
So do you know how much extra oil went into the diff for it to spill?
Totals for me were approx 1.1 liters in the front and 1.8 litres in the rear. Three 1 liter jugs were enough to complete the job.
3rd Oct 2014 11:42 am
Nodge68
Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014
fishinmad wrote:
Not sure I agree with you there, wouldn't a lot of the metal particals be caught by the magnetic drain plug?
The magnetic plug will only collect ferrous particles. Anything non ferrous will remain in suspension in the oil. Over time heavier particles will sink to the bottom of the diff case. Lighter particles will remain in the oil. This is why the oil changes colour.
The only method to remove these potentially damaging particles is to drain the oil, refilling with fresh oil.
I strongly suspect that if these hard worked oils were changed more often, the diffs, transfer box and gearbox would live much longer.
3rd Oct 2014 11:56 am
Nodge68
Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014
armybuck041 wrote:
Nodge68 wrote:
So do you know how much extra oil went into the diff for it to spill?
Totals for me were approx 1.1 liters in the front and 1.8 litres in the rear. Three 1 liter jugs were enough to complete the job.
Thanks for the info.
Today I had some spare time to drive the 15 miles to site sponsor Opie Oils. I picked up some diff oil and gearbox oil. No prises for guessing what I'll be doing tomorrow.
Click image to enlarge
3rd Oct 2014 12:00 pm
fishinmad
Member Since: 30 Jan 2012
Location: St Ives
Posts: 877
What are you using the gear oil for? As the only way to change that is with a flush.Club Narpy Torch
“No return to boom and bust†Gordon Brown when chancellor
He has been proved right, now there is only bust!
3rd Oct 2014 4:31 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
You can still change part of the gearbox oil as per the OEM instructions. It is what I so, but I start my first change at 50 to 60k and do a single flush every 20 to 30k or so after that.
If you change the oil regularly then there is no need for a flush machine. Regrettably few are in this position so the power flush machines are the best option for most.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8044
Robbie wrote:
You can still change part of the gearbox oil as per the OEM instructions. It is what I so, but I start my first change at 50 to 60k and do a single flush every 20 to 30k or so after that.
If you change the oil regularly then there is no need for a flush machine. Regrettably few are in this position so the power flush machines are the best option for most.
+1 I first half changed (5ltr) mine at 65k miles and intend doing a half change at the next two annual services.It can when others can't,
It will when others won't,
It goes where others don't.
3rd Oct 2014 5:37 pm
Nodge68
Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014
fishinmad wrote:
What are you using the gear oil for? As the only way to change that is with a flush.
The manual gearbox
3rd Oct 2014 7:34 pm
BrettKaz
Member Since: 11 Nov 2013
Location: Canberra
Posts: 209
I suffered a front diff leak about 7k kms after diff oil change by mechanic. I then found out he filled to spill ... I then told my mechanic (obliquely accusing him) that overfilling caused the diff seal failure. He insisted this was circa 610ml. I did diff breather mod at same time as oil change ... I read back through the instructions and still believe I did it properly ... angled cut pointing rear- breather pointing backwards.
I have been replacing front diff oil every couple of '000 kms to combat the leak but this time I thought I would fill to spill to check if this was different to 610mls. Using cheap stuff. I drained the oil with the fill plug out.
First I leveled the car north/south and east/west and filled to spill. I did it just by the bottle level and concluded I got between 630-650ml in before spill. I'm not sure how the other chap got 1.1l in.
I am not suggesting either way. If you jack the car up from lhs only I would definitely measure. But I don't feel I have sufficient grounds, in good faith, to blame my mechanic (20-40mls can't be material)... although there is clearly something we did wrong at that point - no previous problems with diff.
Over time heavier particles will sink to the bottom of the diff case. Lighter particles will remain in the oil. This is why the oil changes colour.
Heavier particles will be thrown back into the oil under operation again especially with diffs as theres a fair bit of oil churning going on when its spinning around.
Oil oxidation will also darken the oil. Engines will normally darken the oil from soot and combustion by products - gearboxes and diffs dont get that which is why they will stay clearer for longer
I suffered a front diff leak about 7k kms after diff oil change by mechanic. I then found out he filled to spill ... I then told my mechanic (obliquely accusing him) that overfilling caused the diff seal failure. He insisted this was circa 610ml. I did diff breather mod at same time as oil change ... I read back through the instructions and still believe I did it properly ... angled cut pointing rear- breather pointing backwards.
I have been replacing front diff oil every couple of '000 kms to combat the leak but this time I thought I would fill to spill to check if this was different to 610mls. Using cheap stuff. I drained the oil with the fill plug out.
First I leveled the car north/south and east/west and filled to spill. I did it just by the bottle level and concluded I got between 630-650ml in before spill. I'm not sure how the other chap got 1.1l in.
I am not suggesting either way. If you jack the car up from lhs only I would definitely measure. But I don't feel I have sufficient grounds, in good faith, to blame my mechanic (20-40mls can't be material)... although there is clearly something we did wrong at that point - no previous problems with diff.
I found a similar thing the first time I did my diffs and transfer case - the difference between the measured amount and fill to spill was so small that I've just maintained filling to the "level" plug. Havent had any abnormal leaks - have had one rear diff RHS driveshaft leak but a new seal sorted that out. I put that leak down to fair wear and tear as it was done around 250,000km
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