old-school 5-speed manual
Since nearly every gearbox used the same fluid, a universal GL-4, most manual transmissions on vintage vehicles lack a fluid label. The official recommended is any GL-4 gear oil if there is no label. The Red Line MTL is one of our favorites. Though you should use a Dexron III ATF fluid if your transmission has an orange ATF label. There should be a green “Special Oil” sticker on the transmission of the 1984–1986 325e/528e. These transmissions use a particular synthetic Mobil SHC 630 fluid. We don’t have a recommended substitute for the Mobil fluid due to the limited applications.
Since the mid-1990s, almost all BMW manual transmissions—with the exception of 6-speed M models—have used Dexron III ATF oil, which is identified on the transmission by the letters “ATF.” Nearly anywhere will have a Dexron III specification, however we are impressed with Red Line ATF D4’s performance in manual gearboxes. In our experience, it performs better in colder temperatures than even brand-new manufacturer fluid. An ATF may become too slippery for track use at high temperatures, in which case the Red Line MT-LV, which has a somewhat heavier weight and holds up better, is advised.
A “MTF” sticker on the transmission indicates that BMW started using “Lifetime” fluids during this time period. Since the “Lifetime” has never been completely described, we don’t believe it, especially considering how much better shift quality and smoothness are normally made by using fresh fluid. Over the years, the fluid formula has undergone changes, becoming MTF-LT-1, LT-2, LT-3, LT-5, and FFL-4. They may be distinguished from one another, with LT-2 enjoying the strongest fan support. According to our observations, these LT fluids are suitable for everyday driving and in cold weather, but they are negatively impacted by high temperatures, such as those experienced on a racetrack. For these autos, we have discovered that the Red Line MT-LV is always better than ATF D4 and OEM MTF. The MTF oil used in SMG transmissions is the same as that used in manual gearboxes, however the hydraulic fluid used in the SMG hydraulic pump is Pentosin CHF 11S.
A pair of “wet” clutches, used in the Double-Clutch transmission, are used. The same oil that is used to lubricate the internal parts of the transmission is submerged in the clutch discs. The wet clutch technology guarantees effortless engagement and operation. Although they also refer to it as a “Lifetime Fill,” BMW demands a particular DCT-specific fluid. We don’t buy in to the lifetime fluid policy and have experienced the benefits of fresh fluid on both daily and track cars.
For typical street use, Pentosin’s OEM DCT fluid performs flawlessly. Red Line DCTF is a modernized formula that operates on everyday street cars and endures longer on the track. The fluid thins and degrades under increased heat or power, which causes the clutches to slip. Red Line fluid, which is a stronger oil, won’t degrade as quickly at higher temperatures. Replacement interval suggested: 30,000–40,000 kilometers
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You can check with Volvo, Toyota, Honda, and other manufacturers, but the majority of them do not mention fluid changes for MT. This is largely because MT, even when using factory fluid, easily lasts 200K miles or more with the same fluid. This (200K miles) is much beyond the threshold where automobile manufacturers care.
The drain plug on many MTs has a magnet to collect metal shavings from friction. In contrast to engine oil, which is contaminated by the by-products of the combustion of gasoline, metal pieces rather than gasoline combustion by-products harm MT fluid.
It makes sense to change the MT fluid every 50K or so if you value your BMW and want it to last 350–400K. This is what I do, and as far as I can remember, it is not described in any service manual. In a sense, MT fluid maintenance is a “orphan” or “forgotten infant.”
Specifications for BMW Transmission, Transfer Case, and Differential Fluid (E90/E82/E84)
BMW has a regrettable “lifetime fluid” suggestion and does not advise replacing fluids besides brake fluid and oil. They claim that their “lifetime fluid” never has to be changed, however it should be at about 50,000 miles. This regular fluid replacement will prolong the lifespan of each of these parts and improve the overall driving experience of your car.
How can the transmission oil of a BMW be checked?
- Prior to checking the level, turn the engine on for a while.
- Find the dipstick for the transmission fluid.
- Touch the fluid after removing the dipstick.
- To clean the dipstick, use a rag.
- Fill the automobile appropriately using a funnel, being careful not to overfill it.
Do BMW auto gearboxes require maintenance?
The best automatic gearbox ever released is thought to be this ZF gearbox. found in a variety of automobiles, including the Lamborghini Urus, Aston Martin Vanquish, and Bentley Continental GT. This gearbox was introduced by BMW with the BMW 7-Series F01 and has subsequently been installed in all automatic BMW models, including those with rear-wheel drive and X-Drive.
Your gearbox requires routine oil changes since it is a very complex piece of engineering. There are many hundred parts that make up these transmissions, some of which, like clutches, are meant to degrade over time. The most significant factors influencing the total lifespan of these gearbox components are your driving habits and regular maintenance. We frequently meet vehicles with factory-built transmissions that have survived thanks to routine planned maintenance and very high mileage (over 200,000 km).
These cars’ gearboxes, according to BMW, are “sealed for life.” If you question them further about this claim, they estimate life to be 100,000 miles. Almost every independent mechanic or gearbox specialist will advise gearbox oil and oil filter changes every 60,000 miles, in accordance with ZF (the gearbox manufacturer for BMW). Have faith in ZF; they designed and constructed this transmission.
- Prior to removing the filter when servicing a gearbox, we always look for leaks and clean up. If any further gaskets are needed, we will talk to you about replacing them because now would be the perfect time to do so.
- We completely drain the old oil from the gearbox.
- The oil filter for the gearbox is taken out and changed. In actuality, this is a whole plastic gearbox sump with an integrated filter.
- Then, we refuel the gearbox with authentic ZF oil called “ZF Lifeguard Fluid 8,” which is produced by the gearbox manufacturer.
To maintain your transmission operating at its peak and prevent expensive rebuilds down the road, we advise having a thorough gearbox oil service performed every 60,000 miles for a cost of PS649.00 inc. VAT (this includes components, oil, labor, and VAT).
For PS79.80 inc. VAT, a software upgrade for the gearbox can be purchased. By doing this, BMW’s most recent gearbox firmware update will be applied. This upgrade fixes some of the gearbox issues that these boxes have developed a reputation for over the years, so if your car is older than 2017, we strongly advise installing it.
How much oil does a BMW transmission require?
The tried-and-true method for changing the gear oil in the gearbox of a BMW E46.
One bottle each of Red Line MTL and Red Line D4 ATF are included in this kit. The best of both worlds—smooth gear changes and the outstanding protection provided by Red Line gear oils—can be had by combining these two oils. We released this kit following extensive consultation with BMW owners and discussion on numerous forums.
There is more than enough oil in this kit to complete the oil change because the gearbox on the BMW M3 E46 requires between 1.6 and 1.7 litres.
Is transmission fluid accepted by BMW?
Be aware that replacing the fluid in an automatic transmission can be a highly complex task requiring a precise approach, specialized tools, and/or expert-level diagnostics software. Fresh fluid will without a doubt function better than used and soiled fluid. However, the majority of the issues we hear about stem from either failing to set the proper fluid level following a poor transmission flush when particulates and debris obstruct fluid movement. We think that extended fluid service (>50,000 miles) is appropriate as long as the fluid level is constantly monitored and maintained. We also think that automatic transmission fluid servicing should be left to a qualified BMW technician.
The recommended fluid for 4-speed BMW automatics is ATF Dexron III. Since it works with the majority of GM and Ford auto transmissions, this is also the most typical ATF you will discover at auto parts stores. Replacement interval suggested: 40,000 miles
BMW 4 and 5-speed automatic transmissions are produced by either GM (5L40-E/A5S360R) or ZF (4HP). Dexron III is the recommended ATF for either. Since it works with the majority of GM and Ford auto transmissions, this is also the most typical ATF you will discover at auto parts stores. Dexron III is still compatible with the current Dexron VI specification, which BMW has adopted. If you take your automobile to the dealer for maintenance, D6 will probably be installed. When topping off the oil level, BMW advises using only the same fluid in the transmission. Keep track of the oil in your gearbox because combining ATF oil brands and specifications is not advised. 60,000 miles is the advised replacement interval.
all-speed automatic The BMW 6-speed automatic, which is produced by either GM (6L45/6L50) or ZF, was mostly employed in RWD and AWD cars in the mid-2000s. The ZF GA6HP19, GA6HP26, and GA6HP28 were utilized by BMW across the board. Contrary to what is stated online, a complete oil pan and gasket kit is available for the ZF 6HP and can be used for servicing. However, due to the specific procedures needed, expert servicing is advised. The OEM ATF has a Dexron VI (D6) rating and is a ZF Lifeguard 6. It is known as “ATF 2” by BMW. Keep track of the type of oil in your transmission since vehicles that initially utilized D6 (all 6- and 8-speed automatics) cannot be converted to D4. 80,000 miles is the recommended replacement interval (BMW estimates 100,000 miles).
all-8-speed automatic The ZF-produced BMW 8-speed automatic was mostly seen in RWD and AWD vehicles from the middle of the 2010s. The 8HP45, 8HP50, 8HP70, and 8HP75 were used by BMW across the board. A complete oil pan and gasket kit is available to make servicing the ZF 8HP possible. However, due to the specific procedures needed, expert servicing is advised. The OEM ATF has a Dexron VI (D6) rating and is a ZF Lifeguard 8. It is known as “ATF 3” by BMW. Keep track of the type of oil in your transmission since vehicles that initially utilized D6 (all 6- and 8-speed automatics) cannot be converted to D4. 80,000 miles is the recommended replacement interval (BMW estimates 100,000 miles).
How long does oil last in a BMW gearbox?
You should change the fluid in most manual transmissions every 30,000 to 60,000 miles, and in most automatic transmissions every 60,000 to 100,000 miles.
Does BMW advise changing the gearbox fluid?
In order to keep your car’s transmission lubricated and friendly, BMW transmission fluid changes are strongly recommended. Your BMW transmission may slip if you don’t frequently check your fluids at least every 30,000 miles or so.
When should I service the gearbox on my BMW?
For 8 Speed Tiptronic/Steptronic models, ZF 8HP Automatic Transmission oil and filter service is required.
Your Tiptronic gearbox requires routine oil changes because it is an extremely complex piece of engineering. With extremely precise engineering tolerances, the system is computer controlled. The performance will be impacted and other components will be damaged if the gearbox oil is filthy.
The gearbox may overheat or the clutches may burn out as a result of dirty oil. Poor gear selection, drive loss, and transmission failure will result from this.
Although ZF (the company that actually manufactures the gearbox for BMW) recommends an oil and filter service every 62,000 miles (100k) or 8 years, whichever comes first, despite BMW’s claim that the gearbox on these vehicles is “sealed for life.”