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Tag Archives: Transmission

Why BMW's "Lifetime" Automatic Transmission Fluid Isn't Actually "Lifetime"

Why BMW's "Lifetime" Automatic Transmission Fluid Isn't Actually "Lifetime"

The trend in the automotive industry (and this is not just BMW, but every manufacturer) has been to increase service intervals to reduce the cost of ownership artificially. The issue with this is those intervals have been proven to be detrimental to the long term reliability and service life of the vehicles in question. This is the case with BMW's 6HP and 8HP automatic transmissions. ZF 6HP & 8HP Automatic Transmissions Here at Vaughan Automotive, we are very familiar with ZF, who is the supplier of 6HP and 8HP transmissions to BMW. BMW rates these transmissions for a "lifetime fill," however, through our channels at ZF and speaking with the engineers of those transmissions, we've learned that the transmissions are tested to 100,000 miles with an "acceptable rate of failure" on the original fill. 100,000 miles is BMW's definition of what a "lifetime fill" and that's passed the extended warranty and ... read more


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