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Hi there,
am I right that the engine of the 1999 XKR 4.0l supercharged is from an old 5 speed Mercedes?
If yes, do you know from which Mercedes (Model/Type)?
Any of you bought the Original Mercedes dipstick to use it on the Jag? If yes, you mind send me a link of the correct one?
(My aim: I would like to have the Dipstick to make my life a bit easier to change the gearbox oil)
Hi XK Dom,
You are correct, it is from a Mercedes. It is also a very strong transmission and will last as long as the engine does if serviced properly.
Don't believe the sealed for life bull that Jag pedals. All parts for the service can be purchased your local Mercedes dealer for a reasonable price. Don't mess with the oil, get the Mercedes stuff.
Lots of info on the forum just search 766.2 transmission.
MB 236.14 sheet - ATF 134 or 4134, aka "new" 722.9 fluid (MB Part # 001-989-68-03-10)
Mercedes always recommends the latest fluid spec for the 722.6 transmission but there is nothing wrong to use the older fluids (your car came with the 236.10 fluid).
Hi XK Dom,
You are correct, it is from a Mercedes. It is also a very strong transmission and will last as long as the engine does if serviced properly.
Don't believe the sealed for life bull that Jag pedals. All parts for the service can be purchased your local Mercedes dealer for a reasonable price. Don't mess with the oil, get the Mercedes stuff.
Lots of info on the forum just search 766.2 transmission.
K
I heard that bull as well about the sealed for life.
Hi there,
am I right that the engine of the 1999 XKR 4.0l supercharged is from an old 5 speed Mercedes?
If yes, do you know from which Mercedes (Model/Type)?
The transmission origin and the dipstick has been covered but, as written, this post is incorrect.
The engine is Jaguar not MB.
MB 236.14 sheet - ATF 134 or 4134, aka "new" 722.9 fluid (MB Part # 001-989-68-03-10)
Mercedes always recommends the latest fluid spec for the 722.6 transmission but there is nothing wrong to use the older fluids (your car came with the 236.10 fluid).
and of course a Google search of “Mercedes 722.6” will give plenty of reading material that could keep you up for days.
one important thing to remember is that many variants of this transmission were developed. The one that is in the Chrysler Crossfire has some important differing features than ours has. So don’t use the +4 fluid that the Chrysler dealership sells, it’s not the same spec. as what we use. I don’t even think it’s correct for their CrossFire, but the Chrysler parts dept. thinks it is
I went through this exercise last year. Bought the dipstick tool on Amazon. Turned out it was a cheap Chinese copy and did not give a correct reading. Fortunately there is a Jag dealer in town so I checked the level with the blokes there in the shop. Their tool gave the correct measure. So, recommend buying the fair dinkum tool from either Jag or Mercedes. And the five-pack of single use dipstick tube caps.
May I suggest that, while you are under there, check the pilot bushing for leaks. If it needs changing, again, go for the genuine part as the tolerances are precise.
I went through this exercise last year. Bought the dipstick tool on Amazon. Turned out it was a cheap Chinese copy and did not give a correct reading. Fortunately there is a Jag dealer in town so I checked the level with the blokes there in the shop. Their tool gave the correct measure. So, recommend buying the fair dinkum tool from either Jag or Mercedes. And the five-pack of single use dipstick tube caps.
May I suggest that, while you are under there, check the pilot bushing for leaks. If it needs changing, again, go for the genuine part as the tolerances are precise.
Great news, have you got a link for the single use dipsticks?
and of course a Google search of “Mercedes 722.6” will give plenty of reading material that could keep you up for days.
one important thing to remember is that many variants of this transmission were developed. The one that is in the Chrysler Crossfire has some important differing features than ours has. So don’t use the +4 fluid that the Chrysler dealership sells, it’s not the same spec. as what we use. I don’t even think it’s correct for their CrossFire, but the Chrysler parts dept. thinks it is
It is not the DIPSTICK that is single-use; it is the plastic CAP that goes on the top of the dipstick tube. You need to "snap" them off with a flat-tip screwdriver which breaks them. Then put a new one on when finished. You should be able to find them on Amazon; that's where I bought mine. Same with the Shell ATF134 that I used.
And don't forget the copper washer for the drain plug, and while you are at it the connector sleeve. If you decide to change the filter as well, it's worth buying a new set of oil pan bolts, as you will probably strip the head on at least one of them taking them out.
You need a way to measure the gearbox oil temperature - an IR temperature gun is probably the easiest, if you don't have scanner that will show the temperature data.
It is not the DIPSTICK that is single-use; it is the plastic CAP that goes on the top of the dipstick tube. You need to "snap" them off with a flat-tip screwdriver which breaks them. Then put a new one on when finished. You should be able to find them on Amazon; that's where I bought mine. Same with the Shell ATF134 that I used.
Oh I see
Did they give you any information about the part number for the correct dipstick?
Pelican Parts is a reputable company selling quality parts for many German cars.
I bought my 722.6 A/T dipstick from them. It is the correct length and works very well. It does bear pointing out that it takes some twisting and turning to get it fully inserted. I’ll try to find in my records how many inches of it go down the tube before it’s fully inserted.
PS: with a decent scan tool one can observe the actual transmission fluid temperature. Using an IR gun to determine the transmission temperature is not accurate methodology, IMHO.
Using the scanner: The car must be in Drive or Reverse for the correct A/T temp reading to display. This is covered in one of the Jaguar service bulletins. When the car is in Park or Neutral the scan tool will show a temperature displayed that despite what screen says is not the transmission temp, it’s the engine coolant temperature.
Gearbox Dipstick
