Quote:
Originally Posted by Franck from Moscow
If it was so, then why our engines oil don't support the same specificities of lifetime guarantee, same for "bridges" front and back.....
|
You can't directly compare engines and transmissions, they are entirely different systems. Engines have a source of contaminants in terms of byproducts of combustion. You can filter out particles, but you can't take out the acids, etc. Transmissions are sealed, and have no exterior source of contaminants.
Many years ago, engine oil used to be a 3,000 mile item. Improvements to engines and oils have made that 5x, easily. We are headed for even longer. Transmissions used to be a 30,000 mile change. They can make 5 times that easily.
But we've had this thread many times already....
__________________
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
|