[x300] 95 Oil drain plug size

Can someone tell me the size of the oil drain plug on my 95
XJ6? I am going to do my first oil change tomorrow and I
have read several posts that say the size of the plug is
23mm, 30mm, 32mm, 34mm and 1 1/4’’. Which is correct? Also
can I use a socket or do I need a wrench?

Thanks–
1995 XJ6
canton, United States
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In reply to a message from stevenmgrr sent Sat 31 Jan 2009:

1-1/4 is a little loose but it gets the job done. I think I
use the closed end of a big 1.25’’ spanner to get it off. I’m
fairly certain that the proper fit would be 30mm.

Socket is fine as long as you have at least a 20’’ driver. A
24’’ breaker bar will make life much easier. These tend to
get pretty snug between oil changes.

Good luck, enjoy fiddling with your Xj6! :)–

In reply to a message from stevenmgrr sent Sat 31 Jan 2009:

I do believe that 30mm is the correct size wrench but do be
careful with that wrench.

These plugs do not need to be killer tight to seal and
damaged to the oil pan is common from over tightening the
plug. Both cracks in the sump around the drain plug and
stripped threads for the plug have been reported.

AS a precaution on my own cars, I’ve drilled and tapped the
center of the original drain plug for a smaller one. Now
I’ve got steel on steel threads for the drain plug and a
much smaller wrench is needed which helps prevent accidental
overtightening.–
The original message included these comments:

Can someone tell me the size of the oil drain plug on my 95
XJ6? I am going to do my first oil change tomorrow and I
have read several posts that say the size of the plug is
23mm, 30mm, 32mm, 34mm and 1 1/4’’. Which is correct? Also
can I use a socket or do I need a wrench?


91 XJ6, 93 Sov, 97 Sov – Driveway’s crowded!
Tampa Fl, United States
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1 Like

In reply to a message from Win sent Sun 1 Feb 2009:

Why couldn’t something like a ball valve or some other simple drain
be installed instead of the smaller plug? Seems like it would make
draining oil much simpler.

Lee Murray–
The original message included these comments:

AS a precaution on my own cars, I’ve drilled and tapped the
center of the original drain plug for a smaller one. Now
I’ve got steel on steel threads for the drain plug and a
much smaller wrench is needed which helps prevent accidental


Lee Murray '95 XJS 4.0 Convertible 2+2, and '96 XJ6
Sherburne, NY, United States
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In reply to a message from Win sent Sun 1 Feb 2009:

You are correct in that it is 30MM. On my BMW, the plug is a
sacrificial design. The plug is hollow, and if somone got ham
fisted with it, the head will wrench off. This leaves the threaded
male part , which is hollow, remaining in the pan. To remove it,
you could use almost eanything that you would jam in the hollow to
get it out. I think it is agood design.–
The original message included these comments:

I do believe that 30mm is the correct size wrench but do be
careful with that wrench.
These plugs do not need to be killer tight to seal and
damaged to the oil pan is common from over tightening the
plug. Both cracks in the sump around the drain plug and
stripped threads for the plug have been reported.
AS a precaution on my own cars, I’ve drilled and tapped the
center of the original drain plug for a smaller one. Now
I’ve got steel on steel threads for the drain plug and a
much smaller wrench is needed which helps prevent accidental
overtightening.


uncle
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In reply to a message from LeRoy Murray sent Sun 1 Feb 2009:

Lee,

I’ve seen valves that replace the drain plug and yes, I
think they would make the job easier and remove the risk of
over tightening the original plug with subsequent sump damage.

But, I’ve not seen a valve with the rather odd 22mmX2.5
(IIRC) threads. Standard inch and metric sizes are commonly
available but I don’t think Jaguar used one of the ‘‘common’’
sizes.–
The original message included these comments:

Why couldn’t something like a ball valve or some other simple drain
be installed instead of the smaller plug? Seems like it would make
draining oil much simpler.
Lee Murray


91 XJ6, 93 Sov, 97 Sov – Driveway’s crowded!
Tampa Fl, United States
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In reply to a message from Win sent Mon 2 Feb 2009:

You can get the 20 X 2.5 Helicoil (helicoil brand stainless steel
inserts) to repair the threads if they are damaged. The trick is to
get the Drill, Tap and Thread insert perfectly perpendicular to the
sealing surface or the plug will be crooked and it will leak oil. I
have done several repairs and had to ‘tweek’ the drain plug surface
with ‘trial and error’ fitting with an abrasive pad. I tighten the
plug and look for a perfect circle in the aluminum pan and remove
material on the ‘high side’ until the plug leaves a nice even
circle where the plug touched the pan. It is cheaper than a new pan.

bob gauff–
The original message included these comments:

I’ve seen valves that replace the drain plug and yes, I
think they would make the job easier and remove the risk of
over tightening the original plug with subsequent sump damage.
But, I’ve not seen a valve with the rather odd 22mmX2.5
(IIRC) threads. Standard inch and metric sizes are commonly
available but I don’t think Jaguar used one of the ‘‘common’’
sizes.


Owning and Repairing Jaguars Since the Early 70’s
Decatur, TX., United States
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In reply to a message from LeRoy Murray sent Sun 1 Feb 2009:

I have seen these valves. My concern is the results of running
over road debris. With all that hardware hanging down, I can see a
real catastrophy in the making; fractured valve, damaged pan, total
oil loss, etc.–
The original message included these comments:

Why couldn’t something like a ball valve or some other simple drain
be installed instead of the smaller plug? Seems like it would make
draining oil much simpler.


uncle
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In reply to a message from uncle sent Tue 3 Feb 2009:

That is something to think about, I went out and looked under my
XJ6 and even allowing for an elbow to turn the ball valve flat
instead of pointing down, it’s only 6 or 8 inches off the ground.
Seemed like a good idea though.

Lee Murray–
The original message included these comments:

I have seen these valves. My concern is the results of running
over road debris. With all that hardware hanging down, I can see a
real catastrophy in the making; fractured valve, damaged pan, total
oil loss, etc.

The original message included these comments:

Why couldn’t something like a ball valve or some other simple drain
be installed instead of the smaller plug? Seems like it would make
draining oil much simpler.


Lee Murray '95 XJS 4.0 Convertible 2+2, and '96 XJ6
Sherburne, NY, United States
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In reply to a message from LeRoy Murray sent Tue 3 Feb 2009:

Another thing you could do if you have someone else change your
oil. Buy a 30mm Socket, and a torque wrench. Keep it in the trunk
and issue it to the tech who changes the oil.

A cheap one from Harbor Freight is about $9.00 on sale.–
The original message included these comments:

That is something to think about, I went out and looked under my
XJ6 and even allowing for an elbow to turn the ball valve flat
instead of pointing down, it’s only 6 or 8 inches off the ground.
Seemed like a good idea though.


uncle
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In reply to a message from stevenmgrr sent Sat 31 Jan 2009:

Here’s a warning to you from a Jag newbie as well. My
first ‘‘lesson learned’’ experience.

I do all my own oil changes. All my previous cars have had small 4
cylinder engines. This is my first 6 cylinder/4 liter. I have a
pretty small oil catch pan and not thinking too far in advance
popped off the oil drain plug. The oil comes out FAST!!! It
totally overshot the pan! I moved the pan, but then the oil was
coming out of the engine faster than my oil catch pan could bring
it in and overflowed.

My two year old was announcing to the neighbors, ‘‘DADDY MADE A
MESS!!!’’–
If it aint broke, fix it til it is! Mine is a 95 XJ6 VDP
Castle Rock CO, United States
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As all our US politicians would say, ‘It was an honest mistake.’. :wink:

Roger
05 XJ8L Bluesette

At 07:50 PM 03-02-09, you wrote:>In reply to a message from stevenmgrr sent Sat 31 Jan 2009:

Here’s a warning to you from a Jag newbie as well. My
first ‘‘lesson learned’’ experience.

I do all my own oil changes. All my previous cars have had small 4
cylinder engines. This is my first 6 cylinder/4 liter. I have a
pretty small oil catch pan and not thinking too far in advance
popped off the oil drain plug. The oil comes out FAST!!! It
totally overshot the pan! I moved the pan, but then the oil was
coming out of the engine faster than my oil catch pan could bring
it in and overflowed.

My two year old was announcing to the neighbors, ‘‘DADDY MADE A
MESS!!!’’

If it aint broke, fix it til it is! Mine is a 95 XJ6 VDP
Castle Rock CO, United States
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Hi there,

I just found the classic stripped oil pan threads on my first oil change. Has anyone used this product that I found on Ebay- JAGUAR 2 PIECE OIL PAN DRAIN PLUG PERMANENT REPAIR 1988-1997 XJ6 XJ12 XJ40 XJ300 and here’s the link JAGUAR 2 PIECE OIL PAN DRAIN PLUG PERMANENT REPAIR 1988-1997 XJ6 XJ12 XJ40 XJ300 | eBay

I cant find the part anywhere else though. I think if this doesn’t work, I may pay a garage to insert maybe a helicoil.