[x300] Differential fluid

Hello,

i’m going to change the fluid of differential. How can I do this?
It’s an easy job? What kind of fluid can I use and do I need to put
some type of additive?

My best regards,
Miguel–
migueldefender from Lisbon - Jaguar X300 1995 in Marocco Red
Lisbon, Portugal
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

I changed my differential oil a couple years ago and don’t recall anything
unusual about the job. Drain hole at the bottom, filler hole about 2/3 of
the way up on the back of the diff. Before draining the old oil make sure
you can remove the filler plug…just in case it is stuck ! Clean road
dirt away from the filler hole before adding oil.

I used standard 80/90 weight gear oil…Shell, Valvoline, whatever name
brand strikes your fancy is OK. There are synthetics out there, too.

If you have a limited slip differential you’ll need a friction modifier. I
use GM stuff…part number 1052358. My understanding is that the Ford stuff
is exactly the same…no confirmation of that, though. Not sure what would
be available in Portugal.

The labeling on some of the synthetic gear oils claim that
additives/friction modifiers are not needed if used with limited slip.

Cheers
Doug Dwyer
Longview Washington USA
1995 XJRFrom: “mikedefender” migueldefender@sapo.pt

i’m going to change the fluid of differential. How can I do this?
It’s an easy job? What kind of fluid can I use and do I need to put
some type of additive?

In reply to a message from Doug Dwyer sent Mon 9 Mar 2009:

Hello Doug,

my X300 it’s a simple 3.2L. In that case I can use a simple 80/90
fluid? Do you know what do it have from factory? Any additive it’s
necessary?

It’s very hard to remove the filler plug?

About changing for new parts, i’m going to change all the plugs for
a new ones. Do you know if there is more parts to change? Like o-
rings or others?

My best regards,
Miguel–
migueldefender from Lisbon - Jaguar X300 1995 in Marocco Red
Lisbon, Portugal
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

my X300 it’s a simple 3.2L. In that case I can use a simple 80/90
fluid?

I would. Others will add their own opinons.

Do you know what do it have from factory?

I’m fairly sure it was Shell 80/90 but perhaps someone can verify

Any additive it’s
necessary?

Only if you have a limited slip differential

It’s very hard to remove the filler plug?

Not normally but, if it is stuck, you’d want to find out before draining
out all the old oil !

About changing for new parts, i’m going to change all the plugs for
a new ones.

Any particular reason why? Just wondering

Do you know if there is more parts to change? Like o-
rings or others?

Nothing like that was needed on my car. I can’t imagine yours being
different.

Cheers

Doug Dwyer
Longview Washington USA
1995 XJRFrom: “mikedefender” migueldefender@sapo.pt

In reply to a message from Doug Dwyer sent Mon 9 Mar 2009:

Thanks Doug. :slight_smile: My one do not have limited slip differential.

About the new plugs, i’m going to change it because it have some
years old, so if I put a new one, it’s always a new part. :slight_smile: I need
also to clean my differencial, because it have many oil arround
(maybe a leak?)

My best regards,
Miguel–
migueldefender from Lisbon - Jaguar X300 1995 in Marocco Red
Lisbon, Portugal
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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In reply to a message from mikedefender sent Mon 9 Mar 2009:

Miguel,

Check the oil specifications.

Many of the oils in the US at least have the friction
modifiers already added.

I used a mixture of Valvoline 85-140 synthetic blend and
Mobil 75-90 synthetic. The car has 123k mi and operates in a
sometimes hot climate.

I did notice some slight weeping around the differential but
this seems to be normal. No drips on the driveway!–
The original message included these comments:

Thanks Doug. :slight_smile: My one do not have limited slip differential.


Dan, 2000 XJ8, 120k mi, Bay Area, California
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