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MG TD TF 1500 - Differential oil; draining of; procedure

I’m going to change the differential oil in my 1951MGTD. I have a question about the procedure for doing it. When draining and changing the engine oil, the universal practice is to warm up the engine and the oil first and then drain it. Is that same procedure used when draining and refilling the differential. Should I take her car out for a drive first before I drain it? Or can I drain it cold?
Milt
Milton Babirak

Warm it up, more complete drainage.

Dave Clark required that before shipping rear ends back to him.

Peter
P G Gilvarry

Hi,
Warming up the engine aims at getting the oil more fluid and also at mixing some particles that would stay on the sump when stopped for a long time. All that to remove dirty oils as much as possible.
All this apply for the rear end as well.
I often let the plug open for a week before refill.

Laurent.

LC Laurent31

Milton. Be very diligent about the choice of gear oil you renew the differential with. There are soft metal thrust bearings for the spider gears. Using a gear oil not designed for soft metals will destroy the thrust bearings in very short order. They are NLA and if destroyed will cause the spiders to not mesh with the side gears properly causing stress and wear to the gears as well. Also do not use a detergent oil. Inspect the oil that comes out for filings.
W A Chasser

"I often let the plug open for a week before refill."

If I did that these days I am sure I would forget and drive off with a empty rear end. I would need to put some sort of flag on the steering wheel. :-)
Christopher Couper

I'm with you Chris, I leave notes everywhere anymore, plus pulling the battery cables! Age can be disheartning at times. I do keep a winter put to bed checklist and one for waking it up in the spring.👍
PJ Jennings

This thread was discussed on 15/12/2019

MG TD TF 1500 index

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