Originally Posted by fun2drive
ZF recommends 50K miles 80KMS for almost all their current transmissions, Be aware that ZF and the manufacturers do not agree on the change interval. For example BMW on the 6 spd autos stated life time fill no changed needed. Two years ago changed to 100K miles. All along ZF stated 50K miles or 80KMS. I stick with the company that built the transmission.
The drain and refill is about the easiest maintenance you can do to prolong your tranny life. ZF refill isn't what you normally do as they wish you to have the engine running transmission fluid between 80-120F and fill the weep hole until it leaks out again engine running. Done...
I have always done regular trans fluid changes on past cars myself and I think this is typically a very neglected area with many people. I don't believe in fill for life anything if you plan to keep the vehicle for a long time. the cost on a fluid and pan filter of this one is a bit much compared to the $75 dollar drain and fills I have been used to in the past in my drive way. I have worked on several different types of transmissions but ZF has never been one of them. a few questions as you are experienced with them
1. are all 8HP70 trans filterpans going to be the same weather its from a BMW or a jeep or a Jaguar? is it a standard issue pan from ZF that manufacturers just stamp their own part number on and call it theirs? Kind of like Chrysler charges $45 a quart for their 8spd ZF fluid but you can buy a case of ZF Lifeguard 8 at $17 a quart and its the exact same identical stuff?
Is a pan kit like this in link going to be the identical same thing? or is that a negative and go with the mopar spec number?
Oil change kit for BMW 8HP45/70
2. Is it better to do the whole full pan/filter change the first time at 50-60k due to the new car breaking in and potentially more wear metals filling the magnets and in the filter and then drain and fill after that. or just drain fill first and panfilter at 100k? id tend to want to do the panfilter at the 60k mark and then drain fill next time. yay or nay or what is best?
3. if drain and fill only can you just measure what you take out and put the exact amount right back in making the assumption that the factory fill level was correct. rather than trying to going through a check with it running which is fine on a lift but not something I want to do as much in a home garage.