Quote:
Originally Posted by sunny5280
My assumption in this discussion is the correct fluids are used and the fluid is change properly. Under those circumstances I (as well as you) see little risk in changing the fluid and potential upside. Y outweighs X easily. And until I see data showing otherwise I'll continue to conclude transmission failure from properly changing the fluid is nothing more than an urban legend.
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How are you going to properly change a fluid that isn't designed to be changed? How are you going to drain it all?
For you, Y outweighs X. That is reasonable. For me, it doesn't, and I generally know how to work on the vehicle, and how to obtain the correct fluid. I provided the X and Y framework to try and move this into a more reasoned discussion. You see X as very small, I see it a little larger. You see Y as large, I see it as practically zero.
You keep calling X an urban legend, but that is insulting. My decision is based on over 25 years of relevant work experience, shop experience, oil lab experience, my mechanical engineering training (including tribology courses), and years of service management. The phrase urban legend puts all that in the same category as the yeti. You certainly don't have to agree with everyone, but you should at least respect other's opinions.
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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
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