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Oil Drain Plug Gaskets Source and Type MR41

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Old 11-22-2020, 07:08 AM
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Default Oil Drain Plug Gaskets Source and Type MR41

It is just a small thing, but it is nice to have them around. The oil drain plug gasket is used on various brands. It is a hybrid type of O-ring known as the MR41.

Here is a link to a supplier on USA eBay: Set of 10 - MR41 Metal Rubber Oil Drain Plug Gasket/Washer for Various Vehicles

Note that the very early vehicles use a different gasket which appears to be an Aluminum crush washer much like a Honda car.



 
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Old 11-22-2020, 07:41 AM
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I’m using a copper crush washer on mine and am having no problems, but this is good to know for the next oil change.
 
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Old 11-22-2020, 08:36 AM
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The VERY early original 1997-98 XJ/XK used a drain plug (13mm hex) with a renewable rubber seal insert.
We just replaced the rubber seal for the oil change.
I still have a few seals in the original poly bag.

Later drain plugs were still 13mm hex but came complete with a larger rubber seal.
Even later drain plugs were complete with seal but 16mm hex.

A drain plug was renewed EVERY oil change when I worked at the dealer but the seal and plug should last through a few changes if the plug is SNUGGED and not torqued to 'arm wrestler tight'.

The original Jaguar drain plug should have a groove at the sealing base for a rubber ring seal.
 
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Old 11-22-2020, 08:57 AM
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Why mess with drain plugs and gaskets?
I haven't bothered with those for years, since I installed a Fumoto drain valve.
Depress and push a small lever and the valve opens. Push it back and the valve closes. You just can't get any simpler than that.
I have had these on all my cars for many years without any problems. I don't recommend many things, but this one I recommend.
They even have one with a nipple that allows you to attach a hose. You can drain the oil directly into a waste container, no drain pan needed. Clean and easy.

https://www.fumotooildrainvalve.com/
 
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Old 11-22-2020, 09:43 AM
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Originally Posted by motorcarman
The VERY early original 1997-98 XJ/XK used a drain plug (13mm hex) with a renewable rubber seal insert.
We just replaced the rubber seal for the oil change.
I still have a few seals in the original poly bag.

Later drain plugs were still 13mm hex but came complete with a larger rubber seal.
Even later drain plugs were complete with seal but 16mm hex.

A drain plug was renewed EVERY oil change when I worked at the dealer but the seal and plug should last through a few changes if the plug is SNUGGED and not torqued to 'arm wrestler tight'.

The original Jaguar drain plug should have a groove at the sealing base for a rubber ring seal.
Thanks for the clarifications. It was a friend in the UK who told me about the crush washer on his very early car.

Always thought it kind of nice that they used an engineering seal for the oil drain. The tightness of the plug is only to keep it from loosening not make the seal.

Curious if you have a part number for the two types of seals. I wonder if there is a Ford equivalent.

I have mixed feelings regarding the kits which create a tool-less drain valve. If something is kicked up and hits the regular plug, it would take a lot to break it. Something protruding, not so much force needed to break it off.
 
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Old 11-22-2020, 11:28 AM
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Here are the changes that Jaguar used for the V8 drain plugs from the late 1990s to the mid 2000s.



 
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Old 11-22-2020, 01:58 PM
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thank you for the information motorcarman
 
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Old 11-22-2020, 05:57 PM
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Originally Posted by WhiteHat
Thanks for the clarifications. It was a friend in the UK who told me about the crush washer on his very early car.

Always thought it kind of nice that they used an engineering seal for the oil drain. The tightness of the plug is only to keep it from loosening not make the seal.

Curious if you have a part number for the two types of seals. I wonder if there is a Ford equivalent.

I have mixed feelings regarding the kits which create a tool-less drain valve. If something is kicked up and hits the regular plug, it would take a lot to break it. Something protruding, not so much force needed to break it off.
This is precisely the reason I hesitate to buy a drain valve. The roads here are dangerous to the undercarriage of any car even when driving carefully.
 
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Old 11-22-2020, 07:49 PM
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What kind of roads are you guys driving on?
If something could do that much damage do you really think that a drain plug vs drain valve will make a difference? The oil pan is a much larger target than a drain valve or plug.
If it's that bad you need a skid plate, a lift kit, and huge tires.
A drain valve is the least of your worries.
To each his own, I guess. I just love the drain valves.


 
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Old 11-22-2020, 09:45 PM
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FYI the Ford part number for the Jaguar AJ8 3017 drain plug is:F6TZ 6730-BA, Dorman aftermarket is: 090-115.1
 
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Old 11-22-2020, 10:12 PM
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I have one of the Fumoto drain valves too. Best thing since sliced bread.Fumoto F106N FN-Series Drain Valve .

Fumoto F106N FN-Series Drain Valve with Long Nipple with Lever Clip
Amazon Amazon



 
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Old 11-24-2020, 08:15 AM
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Just ordered the Fumoto drain valve. Gotta try new things every so often. With the right receptacle it could eliminate the drain pan. Might use my boat oil change setup with a pump leading to a container.

The area is well protected under there, these cars do have enviable ground clearance and i avoid bad roads.
 
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Old 11-24-2020, 12:00 PM
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Originally Posted by WhiteHat
“.....The area is well protected under there, these cars do have enviable ground clearance and i avoid bad roads.
my Fumoto drain nipple doesn’t point straight down, so the ground clearance is not an issue with it. I attach a 3/8” ID clear hose to it with the other end going to my oil bucket that I take to recycling. Nothing much to clean up except the oil coming out when the filter is loosened. All in all, a very tidy oil change.

Z.
 
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Old 11-24-2020, 12:09 PM
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Originally Posted by zray
my Fumoto drain nipple doesn’t point straight down, so the ground clearance is not an issue with it. I attach a 3/8” ID clear hose to it with the other end going to my oil bucket that I take to recycling. Nothing much to clean up except the oil coming out when the filter is loosened. All in all, a very tidy oil change.

Z.
Thanks for posting the model number of the valve you use. It is on order.
 
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Old 11-25-2020, 09:50 PM
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Be aware that there are a few different configurations to choose from, with a nipple or without, and they may have more options. It's a wonderful thing.
 
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Old 11-25-2020, 10:15 PM
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Originally Posted by stu46h
Be aware that there are a few different configurations to choose from, with a nipple or without, and they may have more options. It's a wonderful thing.
I bought mine thru Amazon but here’s the manufacturer’s link with the various choices:

https://www.fumotooildrainvalve.com/



 
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Old 11-26-2020, 07:39 AM
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Thanks stu46h and zray, i looked at the chart and decided upon the one that zray originally linked to. I have a little electric oil change rig that was made for boats that neatly (zero chance of spill) fills any container with the waste oil. Having that hose nipple there is going make things very easy when i go garage-less for a few years.
 
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Old 12-06-2020, 12:04 PM
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Thanks to Zray and Stu46h for suggesting the Fumoto drain valve. Installed it a few days ago, easy enough thing to do. Strongly recommend using a torque wrench and crowfoot with a short extension. These are obviously lubricated threads and some of us are members of the international association of people who like to over tighten things.

Looks like the next oil change is going to be very easy.

thanks again.
 
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Old 12-06-2020, 01:50 PM
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Anyone using the Stahlbus version of this? I've been looking at this one for a while. More expensive, but no external hangy bits, and positive quick connect-type connector. Not clear this makes any difference in practice, however.

​​​​​​https://www.stahlbus-us.com/oil-drai...et.html?type=N

 
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Old 12-06-2020, 07:33 PM
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It looks like 6 of one, half-dozen of another, type thing. Not accounting for the price differential, I see arguments that could be made for either type.


Z
 


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