I think that R25k-R35k bill is if your gearbox has eaten itself. Normal service is under R6k.Beemerbro said:It would be interesting to hear ZF's procedure of changing ATF because as far as I'm aware you can't remove all the oil as about half of it is retained in the torque converter. To get all of it out you'd have to take the whole transmission out and open it which is very costly. The usual procedure that I know is commonly used is to drain whatever comes out and refill, drive for couple of thousand miles then drain and refill again and repeat this three times and by then most of the old oil will have been removed. I've done this myself twice in SA on my BMWs and have just completed a total flush here in the UK on an Astra that was done by a local workshop and they followed the same procedure.
Now I had a look at ZF quotes in a car Magazine last year and was shocked at the prices they were quoting for an autobox service between R25k-R35k. I wondered whether this was for each visit you attended and if they were using the method I described, does it mean you will pay that figure 3 times?:rage:
Ask Duncan auto how they do it, and I'm pretty sure they will tell you it must be changed two or three times for a complete flush.
I did it myself and the total cost for 3 ATF changes came to around R5000 for 15 litres of oil, Febi filter, BMW gasket, BMW sump screws. I bought all of it in London. BMW SA will ask for about R600 a litre of oil. But if you do some research of the specific oil required you might find it a lot cheaper elsewhere. Your local garage that you trust will charge you far less than ZF I'm sure.
If you do go to ZF ask them how they do theirs so we can hear more.
KPM_330 said:Unfortunately it doesn't make sense to compare them, since one was a manual and the other is an automatic, not to mention that the newer car has a more powerful engine.
The auto-box can add up to a litre or more per 100km, depending on the route/driving style. Direct comparison between an E90 320i manual and automatic, the automatic used 2l/100km more, with a similar driving style. The fact that an automatic will shift up early or outside the powerband, then you kickdown to get it back into the powerband - this all uses extra fuel, which contributes to a higher consumption.
That said, the ZF6 is still one of the earlier automatics, that 'use' fuel to function. It's only the newer ZF8's that offer fuel efficiencies from the gearbox.
KPM_330 said:Those claim figures are a big 'LOL', achieved in a controlled environment at xx degrees, with xx amount of throttle, at xx speed, on a xx incline, with xx wind speed... You get my drift.
Those claimed figures are just that, I tend to not pay attention to that and go on what the average is from real owners.. When it comes to pre-2012 BMW's, manual was always the clear winner for frugality, especially since you had all the control you needed in the palm of your hand.. You can manipulate driver inputs to decrease fuel consumption, whereas the automatic box does the 'thinking' for you.
My 335i manufacturer claimed fuel consumption was around 9l on a mixed cycle, it was closer to 12l with that autobox and moderate driving :fencelook:
kramz said:Difference in the consumption is the manual vs auto bru. Also I've heard the guy who suggested the detail to you is a legend :smilebounce:
KPM_330 said:Those claim figures are a big 'LOL', achieved in a controlled environment at xx degrees, with xx amount of throttle, at xx speed, on a xx incline, with xx wind speed... You get my drift.
Those claimed figures are just that, I tend to not pay attention to that and go on what the average is from real owners.. When it comes to pre-2012 BMW's, manual was always the clear winner for frugality, especially since you had all the control you needed in the palm of your hand.. You can manipulate driver inputs to decrease fuel consumption, whereas the automatic box does the 'thinking' for you.
My 335i manufacturer claimed fuel consumption was around 9l on a mixed cycle, it was closer to 12l with that autobox and moderate driving :fencelook: