XJR Transmission fluid
#1
#3
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The "Valvoline MaxLife Dex Merc ATF" was listed as a replacement fill in a Mercedes 722.6 training document. This was posted on one of the big Mercedes boards, complete with .pdf copy of the document in question. (Mercedes 722.6 = Jaguar W5A580 = Chrysler NAG1)
It is also highly prized on some the BMW boards with a lot of hoarding going on when they can find it cheap.
The Chrysler NAG1 calls for ATF4+, so that might be worth looking at as well. But, it is more expensive than the Valvoline Maxlife.
Last edited by plums; 08-01-2011 at 10:12 PM.
#4
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The shop that rebuilt my transmission used it. I argued a bit, but they showed me the Valvoline spec documentation and warrantied the transmission for 3 years / 100K miles so I decided it was on them if they were wrong! I don't have enough mileage as it was only about 2500 miles ago, but time will tell.
#5
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Not yet. Just waiting to get some other things done first.
The "Valvoline MaxLife Dex Merc ATF" was listed as a replacement fill in a Mercedes 722.6 training document. This was posted on one of the big Mercedes boards, complete with .pdf copy of the document in question. (Mercedes 722.6 = Jaguar W5A480 = Chrysler NAG1)
It is also highly prized on some the BMW boards with a lot of hoarding going on when they can find it cheap.
The Chrysler NAG1 calls for ATF4+, so that might be worth looking at as well. But, it is more expensive than the Valvoline Maxlife.
The "Valvoline MaxLife Dex Merc ATF" was listed as a replacement fill in a Mercedes 722.6 training document. This was posted on one of the big Mercedes boards, complete with .pdf copy of the document in question. (Mercedes 722.6 = Jaguar W5A480 = Chrysler NAG1)
It is also highly prized on some the BMW boards with a lot of hoarding going on when they can find it cheap.
The Chrysler NAG1 calls for ATF4+, so that might be worth looking at as well. But, it is more expensive than the Valvoline Maxlife.
#6
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The shop that rebuilt my transmission used it. I argued a bit, but they showed me the Valvoline spec documentation and warrantied the transmission for 3 years / 100K miles so I decided it was on them if they were wrong! I don't have enough mileage as it was only about 2500 miles ago, but time will tell.
#7
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Here is a picture of a bottle for the 722.9 series with MB 236.12 spec:
![](http://i55.tinypic.com/ntb47.jpg)
The newer MB 236.14 spec for the 722.9 transmissions seems just like the 236.12 backward compatible.
![](http://i55.tinypic.com/34isk6u.png)
So these are strong hints to say the least that the newer oils (so Spec 236.12 and 236.14) can be used in our 722.6 series (spec 236.10).
I am going to do a 60K flush in a couple of weeks, and will go for the Mobil ATF 134 this time. So far I have only used the Shell one (MB spec 236.10 as it was cheap enough at the Mercedes dealer, compared to jaguars price), but I can get the Mobil ATF 134 at significant lower prices again.
Here are the oils which meet the 236.14 oil specs:
http://bevo.mercedes-benz.com/bevolisten/236.14_en.html
![](http://i55.tinypic.com/ntb47.jpg)
The newer MB 236.14 spec for the 722.9 transmissions seems just like the 236.12 backward compatible.
![](http://i55.tinypic.com/34isk6u.png)
So these are strong hints to say the least that the newer oils (so Spec 236.12 and 236.14) can be used in our 722.6 series (spec 236.10).
I am going to do a 60K flush in a couple of weeks, and will go for the Mobil ATF 134 this time. So far I have only used the Shell one (MB spec 236.10 as it was cheap enough at the Mercedes dealer, compared to jaguars price), but I can get the Mobil ATF 134 at significant lower prices again.
Here are the oils which meet the 236.14 oil specs:
http://bevo.mercedes-benz.com/bevolisten/236.14_en.html
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sparkenzap (08-02-2011)
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#8
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However, be aware that the Mercedes boards speculate that the newer fluids are thinner to meet requirements of the 6/7 speed units.
The Shell is available for under $5/quart at Ryder Logistics via online order. That's a North American market offering though.
Last edited by plums; 08-02-2011 at 04:25 AM.
#9
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The oil for spec 236.12 and .14 have indeed a different viscousity (at 100c 6.2 instead of 7.4), but it's not to say that this could be a problem on gearboxes that originaly required 236.10.
The main reason for me make the understatement of strong hints, was indeed because of this. I know this discussion has cone on for several years, and this is why I didn;t go for a 236.12 spec a couple of years back. But as there is no (at least that I can find) evidence that it could cuase an issue, I am more then willing now to swap.
Here is another document from MB that shows a 236.14 spec can be used in the 722.6xx series we have (to be precise 722.650).:
The main reason for me make the understatement of strong hints, was indeed because of this. I know this discussion has cone on for several years, and this is why I didn;t go for a 236.12 spec a couple of years back. But as there is no (at least that I can find) evidence that it could cuase an issue, I am more then willing now to swap.
Here is another document from MB that shows a 236.14 spec can be used in the 722.6xx series we have (to be precise 722.650).:
![](http://i53.tinypic.com/10gbpfq.jpg)
#10
#11
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One could stock less different oils for other reasons than what is best for the gearbox, but I guess if other reasons previaled, it will probably only have a marginal effect, or we would have already heard more. The documents shown (also of course from the big mercedes boards), are pretty clear indeed and I don't think you can go very wrong with the 236.14 oils, will know more myself in a couple of weeks.
#12
#13
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Do you mean the ones that IPT and Level 10 offer? If so, than I have seriously thought about that, as it will help to get quicker shifts. But I do like the GT qualities of our cars, of which smooth shifting is a big part of it imho, and not knowing how much that could be affected means that this mod will be of the list for now.
#14
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The users are of a profile who want hard shifts to accomodate modified engines. Here is one thread that might give you some insignt:
SRT Tranny Shift Enhancements
or,
Transmission solinoids solved all my problems! - MBWorld.org Forums
SRT Tranny Shift Enhancements
or,
Transmission solinoids solved all my problems! - MBWorld.org Forums
Last edited by plums; 08-02-2011 at 06:09 AM.
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Sean B (08-02-2011)
#15
#16
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I'm not sure why you would want to use a different fluid when you can get the MB fluid at such a reasonable price.
The new MB fluid is backward compatible -- many like the older fluid as they say it provides better shifting in the 5 speed. I can't say from personal experience - but some have installed the new fluid and then removed it to see if it was indeed the fluid -- and they say the older fluid provides better shifts in the 5 speed?
You can still find the older fluid -- I have three cars with the same transmission -- so I bought a case of it when they changed the specification.
The new MB fluid is backward compatible -- many like the older fluid as they say it provides better shifting in the 5 speed. I can't say from personal experience - but some have installed the new fluid and then removed it to see if it was indeed the fluid -- and they say the older fluid provides better shifts in the 5 speed?
You can still find the older fluid -- I have three cars with the same transmission -- so I bought a case of it when they changed the specification.
#17
#18
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As to the fluid ...I don't know what the difference is -- the original 5 speed was the go to high output transmission long past the development of the later 6 speed boxes. I don't think they use the 7 speed in the AMG's -- but I have not looked at it in a while.
I think I paid about 15.00 USD for the fluid. Since it ends up being a partial change I like to have the same fluid in the box -- so for me it is a small difference.
I think I paid about 15.00 USD for the fluid. Since it ends up being a partial change I like to have the same fluid in the box -- so for me it is a small difference.
#19
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The gearbox for the AMG is different, lots of extra stronger components, and more important a different shifting strategy. For our cars it is very expensive to make shifts shorter/firmer via the TCU. My reasoning was that if the oil has an effect for a quicker firmer shift, it will lessen slippage, and thus prolong the life of the clutches.
#20
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I'm not sure how much difference they had back then -- Porsche used basically the same box in the 996tt. The 5 speed was the only box that the AMG's used. The XJR's had one of the higher outputs in its day. I do remember discussions regarding how many felt the transmission was going to be overbuilt for the V6 MB 320's