XJ40 ( XJ81 ) 1986 - 1994

Dexron II-D Substitute

 
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Old 03-06-2019, 08:57 PM
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Default Dexron II-D Substitute

My apologies for posting in a 1995-1997 forum, but I could not find a forum that included my car.

I have a 1994 Vanden Plas (XJ6). I need to top of the transmission fluid. The dipstick calls for Dextron II-D, which is no longer available. I am considering either O'Reilly house brand "High Mileage" (conventional) or Valvoline "Dex/Merc" (semi-synthetic). Can anyone offer some guidance about either of these products or recommend a different product?

Thank you all in advance for reading this post.
Bob
 
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Old 03-06-2019, 09:40 PM
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Hi Bob,

I have moved your post from the forum for the X300 to the forum for the XJ40, which is the Jaguar factory project code for your 1994 VDP.

The closest commonly-available substitute for Dexron II or III that I have been able to identify is Valvoline Dex/Merc in the blue bottle, not the full synthetic MaxLife Dex/Merc in the red bottle. The blue bottle Dex/Merc has a Viscosity Index of 190, which is very close to that of original Dexron II / III. The red bottle MaxLife has a significantly lower (thinner) viscosity, and I have learned from experience that the ZF 4HP24 transmission in your '94 will not function optimally on a thinner fluid.

If you decide to do a complete transmission fluid change, other fluid options include the synthetic Mobil 1 ATF, and what I consider the very best Dexron II / III substitute for the 4HP24, synthetic Redline D4 ATF, available directly from Redline Oil or from vendors like Summit Racing.

Cheers,

Don
 

Last edited by Don B; 03-07-2019 at 09:15 AM.
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Old 03-06-2019, 09:49 PM
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Dexron 111 still widely available in Canada.

Larry
 
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Old 03-06-2019, 11:44 PM
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Originally Posted by Lawrence View Post
Dexron 111 still widely available in Canada.
Hi Larry,

Could you tell us some brands of Dexron III that are still sold in Canada?

According to Wikipedia, which of course may not be accurate, "All Dexron-III (H) licenses expired permanently at the end of 2011, and GM now supports only Dexron-VI fluids for use in their older automatic transmissions." I wonder if this is true only in the U.S.?

https://en.wikipedia.org/wiki/DEXRON

Plenty of third-party fluids claim to be compatible with the Dexron II / III standards, but when you actually investigate their specifications per their Material Safety Data Sheets, you find that most of them have significantly lower viscosities than Dexron II / III, and that includes Dexron VI, which is significantly lower in viscosity.

Cheers,

Don
 

Last edited by Don B; 03-06-2019 at 11:46 PM.
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Old 03-07-2019, 12:41 AM
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Hi Don, This is one I would use, but again there seems to be several brands available - this one I guess is generic (MotoMaster is Canadian Tire's own brand) but at least it's on the shelf at Canadian Tire .. scroll down for specs

https://www.canadiantire.ca/en/pdp/m...-0281502p.html

Larry
 
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Old 03-07-2019, 07:59 AM
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Hi Don,

Thank you for moving my post to a more appropriate forum. and more importantly, thank you for taking the time to provide me with that very comprehensive answer.

I sincerely appreciate your assistance. Because I am just "topping off" the transmission fluid, I will use the Valvoline Dex/Merc in the blue bottle.

Warmest regards,
Bob
 
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Old 03-07-2019, 09:10 AM
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Originally Posted by Lawrence View Post
Hi Don, This is one I would use, but again there seems to be several brands available - this one I guess is generic (MotoMaster is Canadian Tire's own brand) but at least it's on the shelf at Canadian Tire .. scroll down for specs

https://www.canadiantire.ca/en/pdp/m...-0281502p.html
Hi Larry,

You'll notice that that fluid is not actually labeled Dexron III. It is labeled Automatic Transmission Fluid, then in small print, "For vehicles where Dexron-III(R) or Mercon(R) fluids are required." This is similar to the labeling practice in the U.S., which is consistent with Wikipedia's statement that General Motors is no longer issuing licenses for use of its trademarked brand, Dexron III.

You can view the Material Safety Data Sheet for MotoMaster ATF on pdf page 96 of this document:

https://www.tayloroilfieldservices.c...ds-2016-v1.pdf

The viscosity of MotoMaster ATF is specified at 40 mm2/s at 40 degrees Centigrade, which is actually higher than original ACDelco Dexron III, but close enough that it is probably a very good equivalent. I wonder if we could get it in the U.S.? Want to start an oil distribution business?

Cheers,

Don
 

Last edited by Don B; 03-07-2019 at 09:16 AM.
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Old 03-07-2019, 10:32 AM
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Originally Posted by Don B View Post

The viscosity of MotoMaster ATF is specified at 40 mm2/s at 40 degrees Centigrade, which is actually higher than original ACDelco Dexron III, but close enough that it is probably a very good equivalent. I wonder if we could get it in the U.S.? Want to start an oil distribution business?

Cheers,

Don
Well this is a surprise! Something available in Canada that you can't get in the States! We can't even get TECHRON in BC because the damn bottles aren't bilingual!

Y'know, I rarely top off my tranny (if ever) but I used this fluid when I did the filter change and flush back in 2014 ... and for the record, the trans has been just fine and worry free since.

Of course, I have some on hand for topping off the perennially leaky hose connectors on the PS reservoir

Oil distribution business? Thanks but no thanks

Larry



 
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