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#21
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Do not change transmission oil ever!
You cannot get all the fluid out of it anyways. Multiple flushes is difficult. BMW says don't change it........my experience proves it......Tranny works perfectly..........now the rest of the car has had just about every other part replaced...... My .02! |
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#22
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After reading through dozens of posts on the topic, the consensus appears to be that a good quality Dexron VI ATF is the best choice. But I have a question - since you can't get anywhere near all of the oil out of the tranny during a flush, is there any possibility of incompatibility between the Dex VI and whatever fluid was put in the tranny at the factory (mine is a 2003 4.4 with 78K miles)? Thanks.
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2003 X5 4.4i 1992 Porsche 968 2007 328i 2014 Subaru Forester XT |
#23
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Quote:
You will get about half of the fluid out by draining the pan and filter, leaving the fluid in the torque converter, lines, and cooler. Since you will be combining the two fluids 50:50, it is always best to use the same fluid. If you use a fluid that meets the spec, you should be fine.
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2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue |
#24
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Quote:
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2003 X5 4.4i 1992 Porsche 968 2007 328i 2014 Subaru Forester XT |
#25
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OK, I had my car up in the air to pull my thrust arms (aka front control arms) to replace their bushings (a very easy job - nothing whatsoever to fear - a very easy DIY), I checked out the label on my transmission. It is indeed a ZF, as it should be for a V8, and it says to use BMW Part No. 83229407807 transmission fluid. Sounds expensive. How would I go about determining the specs on this particular fluid, and whether their is an equivalent or better, but less costly, fluid that meets the same specs?
Edit: I just looked at the DIY for the V8 transmission flush, and it recommends using ESSO ATF LT 71141 or VW G-052-162-A2, so I assume these meet or exceed the specs of the BMW ATF. Are they less expensive, or is there some other reason for using either of these over the BMW fluid? I also assume they must be compatible with the BMW ATF. Thanks.
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2003 X5 4.4i 1992 Porsche 968 2007 328i 2014 Subaru Forester XT |
#26
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You should do a thorough thread search. A great deal has been written on this subject and the various fluid have been discussed in great detail including where to source them, etc.
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#27
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Your're right, there have been quite a few threads on this subject. I've gone through them, and now understand that BMW part 83229407807, ESSO LT71141, and VW/Audi G-052-162-A2 are all the same thing, or at least are all compatible. But I have one follow-up question - I did a Google search on the VW/Audi fluid, and got a link from Redline which claimed that their D4 ATF meets or exceeds the specs of the other two fluids. I did a search on Redline D4 on this forum, and nothing came up. What are the opinions of this ATF? It's considerably cheaper than the VW/Audi fluid (about $10 a liter vs. about $15), but of course if there's any doubt, I'd gladly spend the extra five bucks a liter for the peace of mind. My X5 has 78,000 miles, by the way, and isn't exhibiting any transmission issues; I'm just interested in doing a tranmission flush as preventative maintenance. Thanks.
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2003 X5 4.4i 1992 Porsche 968 2007 328i 2014 Subaru Forester XT |
#28
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#29
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Here is what I found out on the Redline site:
If it was my vehicle, I would be concerned with both the standards that a fluid is tested to, and the compatibility with the fluid that is already in there (the two fluids have different base stocks). If you want to save the $, it is your call. Or, you can go with Yoda's immortal quote: "Be afraid, be very, very, afraid." Personally, I wouldn't even consider Redline products that do not meet manufacturer's published requirements.
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2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue Last edited by JCL; 06-20-2010 at 03:46 AM. |
#30
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It always amazes me that people want to do preventative maintenance (that is not specifically called for by BMW) and then want to start substituting filters, fluids, etc with none OE products just to save somewhere in the neighborhood of $50. Why not just save the money and not do it at all?
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fluid, maitenance, oil, transmission |
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