I need to drain the oil on my recently rebuilt 3.8 engine ( with the downward slanting canister) as part of the break-in routine. I want to leave the oil filter and canister in place until the next oil change. I'm wondering how much oil ( approximately) would be remaining in this filter /canister. I can't just go by the dipstick, as my block / dipstick are not in snyc. I don't want to overfill the sump. Thanks for your thoughts !
Schmitty

 

Schmitty those 45 deg. filters have a drain. Why guess-just drain the filter also.

 

I have changed my 45 degree original filter to a modern screw on filter arrangement but I do not recall a drain in the old housing. (I have the old housing still in the garage). There is a bolt at the bottom which holds the filter housing in place. I suppose you could loosen this off but if you undo this bolt you will disturb the rubber seal at the top and if it is not leaking now I almost guarantee it will once you undo the bolt, drain the oil and then try and reset it. From memory the bolt is loosely attached to the housing with a securing washer on the inside and a rubber seal at the bottom which the bolt goes through, not designed for draining the filter.
If you give me a couple of hours I will pull out my old filter housing and measure its capacity with water.

 

can't you just measure how much was removed and then add the same amount?
the amount in the canister, or elsewhere for that matter, is irrelevant. if i understand what you need to do. and that is, BTW, not always a given where i'm concerned.

 

My issue arises because the mechanic installing my new servo decided to pull the dip stick and , seeing that it indicated the oil was "way low" decided to put in enough oil to get the level to the "full" on the dipstick. BUT,,my dipstick is a shorter one and the block has an "extended" dip stick tube, SO the oil always shows way low on the Jaguar dipstick when in fact in is the correct level. (Jaguars are not for the weak of mind or spirit - I am learning). I have a metal rifle cleaning rod that I've marked to show the correct "full" level that I use to check the oil level. Now with who knows how much extra oil is in the sump, I just want to drain the oil and then add the correct amount without disturbing the Oil canister - which does not have a seperate drain plug, BTW. My best guess is that there is no more than 8 -12 oz. of oil in this canister / filter. When I need to change the oil next time, I will also be adding a screw-on filter arrangement.

 

Ummm.
So why would draining the oil from the sump effect the oil level in the canister ?
Even draining all the oil out will not affect the oil level in the canister, I know this from experience and the mess it makes.
Why drain all the oil out (if I'm reading your post correctly), just drain out enough oil based upon X amount of litres that the mechanic added ?
You can get the level correct with your riffle cleaning rod ???

 

Oil filter canisters fitted for the period in either hammertone silver or green. 24 returns to sump. Volume will vary with old Tecalamit element & modern pleated paper element. I'm sure Cass will give you volume with new pleated paper element.

 

It won't at all Jeff! You are spot on as usual.

 

Schmitty your "downward" facing canister made us think of this. Just FYI the other "downward facing canister". Comments to oil level and filter are spot on. You should make double sure you have the correct dip stick for your sump. Best of luck.

 

Sorry CF but how would the drain plug number 23 in the diagrahm (if that is its intended use) be of any use to drain the filter housing. The Drain Plug 23 as you call it is above the canister so no oil from the canister would be released. Maybe I have got this wrong so can you explain how this drain plug is of any use in more detail please.

 

Cass turn the picture so the numbers are correct and you will see.- the term drain plug is a Jaguar description not ours. That pic was taken from the J25 SPC but it is the same for all XK engines with the "downward" facing canister. Otherwise it would be a hell of a mess. In the J29 SPC it still caries the same number and noun. This carried on through part of the MK2 run.

 

We might need a definition of 'downward facing.' The type in CF's picture is happily uncommon and certainly requires a drain plug. Without it, opening the canister may lead to a good soaking with oil for an unsuspecting mechanic.

 

There is no canister drain plug on our era of Mk2's & S Types by any stretch of the imagination or context in general. A few upward facing canisters that are as rare as rocking horse droppings. A few engine parts left over from the 3.4 Mk1 & of shocking design. The reason for changing it. Jaguar knew it was a ****-up.

 

Read the "Related Thread" comments below.

 

Glyn, I think the (or some) XK150 used that design as well.

 

Yes Peter they did. I have a friend with a 150S so configured that curses at every oil change. As I say above they were a ****-up. And that's being polite. Drain plug or no drain plug you made an unholy mess at every filter replacement. His is a concours winner which is why he has not changed it.

 

I see where the confusion is now.

CF has wrongly thought that what Schmitty stated as "with the downward slanting canister" on a 3.8 engine was actually the upward facing canister from the very early Mk1 and even going back to the XK150. CF has then produced a PDF of the oil filter canister assembly for the XK150 era with the oil drain plug "rightly named as such by Jaguar" but CF have conveniently inverted the PDF so it looks like a downward slanting canister with a drain plug. Like what you did there.
I think CF needs to edit their post so it is correct so as not to confuse anyone in the future who gets the idea that there is a drain plug on the "Downward slanting canister" which is the normal arrangement on a XK engine from the 1960s which includes the Mk2 S type and beyond. Just saying.

 

They are well known for their attempted distortions of fact Rob. Reminds me of a certain Technical Bulletin that was only released over a year after the change took place on the assembly line. This all with being rude to members & displaying a supercilious attitude.

 

Above edited.

 

The J34 SPC dated March 72 p. 18 states the filter C.15428 "upward" facing or however you wish to describe the arrangement was used on 4673 3.4L engines and 7448 3.8L engines so not so rare. We did not rotate the picture by design but the upload somehow did. The admin is welcome to rotate it if possible.