Many of the cars are owned by the owner, with oil, filtration cores and anti-frozen fluids being exchanged very quickly on schedule, with the exception of transformer tanks。
There are two reasons for this: either to listen to the 4s sales and say, “the gearbox will be maintained for life without change”; or to think that the gearbox is large, without failure or noise。
There's a lot of people around here who have a problem with the fact that the gearbox is not changing for a long time, that it's going to work right now, and that it's going to break directly
Today, i have spent more than a decade of military experience, without obscenity, without anxiety, in combination with the original plant maintenance norms, in white words to clarify the role of transformer tank oil, the hidden hazards of long-term non-replacement, and the most appropriate fuel exchange criteria for changing different gearboxes, helping to avoid mass pits and save money and protect cars。
I. Three fatal misperceptions by the owner of the gear tank oil
Zone 1: the factory is marked for life without maintenance
This is one of the most widely circulated conservation faults. The “life-free” definition for vehicle design is defined as the absence of mandatory replacement over the life of the vehicle's design, most of which corresponds to the normal vehicle life cycle of 6-8 years and 150,000 kilometres。
It's not really possible to get to the end of the car, keep using the age and mileage, and the deterioration of the fluid will only continue to damage the inner structure of the gearbox。
Mistake 2: the gearbox is flat, there's no broken lights, the fluid is fine
The gearbox is a precision hydraulic transfer facility, and the fluid deterioration and impurities increase are hidden damages that accumulate slowly. The failure lights will not be activated in the prior period, there will be no apparent disruption, and the internal valves and friction blades are irreversibly worn out when the owner can visualize the anomaly。
Mistake 3: the transformer tank oil is just lubricating, and the top of the deformation is too much of a drag
Many people know only that oil is a lubricating engine, but do not know that speed tank oil is much more functional than oil. It also carries the four central functions of lubrication, hydraulic pressure transfer, heat-dispersion cooling, and cleanness against rust, which, if it fails, affects the working logic of the entire gearbox。
Ii. Will the gearbox be broken if it is not replaced for long
To give you the most realistic and relevant answer:
It will not be instantaneous, but it will result in continuous, irreversible internal wear and tear and, at an approximate later rate, major failure。
It is a gradual process of damage and slow destruction of the gearbox in three stages, unlike the water shortage, which causes the tank to die:
Phase i: decreasing fluid performance, small problems slowly emerging
Cars are not replaced with oil for 4-6 years, and transformer tank oils are slowly oxidized, diluted and resistant to high temperatures and wear and tear。
The most intuitive feelings are: low-speed switching against a slight shock, slower up-and-up reaction, unstoppable cold-car switching, and a slight shaking of the glitch。
This phase is only a poor experience, without hardware damage, and in time for oil change to return to normal。
Phase ii: increase in fluid impurities and start wearing sophisticated accessories
After a long period of operation, the internal frictions in the gearbox produce iron chips, oil mud, mixed around the fluid。
These minor impurities are stuck in electromagnetic valves, valves and pressure-oil roads, leading to pressure instability。
This was followed by a change of blockage, accelerated impotence, low-speed slippage, and a quiet increase in fuel consumption。
At this point, the interior precision parts have begun to be slightly worn and are irreversible。
Phase iii: fuel road congestion, heat dissipation to trigger speedboxes large fix
The heavy build-up of the oil mud and the jamming of the heat-dispersion roads in the transformer tanks have resulted in the continued high working temperature of the transformer tanks。
High temperatures are the largest killer in a gearbox, and long-term high temperatures accelerate friction, age of sealed ducts, and valve-calculation。
Finally, the speedbox is sliding, unstoppable, severely frustrated, frequent failure codes, and at this level it is no longer a solution, it can only be broken down and overhauled, and the cost of maintenance is far higher than the cost of oil switching。
Iii. The risk of long-term non-oil change varies widely among different gear transformers
Many car owners do not know that at, cvt, double-fragmentation, mixing gearboxes have very different tolerance and different probability of bad。
1. Cvt ungraded transmission box (most likely not to change oil)
The cvt structure is transmitted by steel belts and chain frictions, which require a high degree of cleaning and pressure on the fluid。
Long-term oil-free, oil-silted and worn steel belts, with transmission box squealing, speed slipping, steel belt wear, are the most vulnerable types of early damage in all gear tanks。
2. Dry double insulation (relative resistance)
The dry double ligation did not have a gear tank oil immersed in friction chips, and the fluid was only responsible for the lubricating gears。
The main problem is the long-term non-replacement of oil, with gear wear and acoustic noises, with very few complete end-of-lifes, but the change of smoothing can change dramatically。
3. Wet double binding, at automatic
The wet double-inflation and at transformer tanks are subject to fluid dissipation, controlled pressure, long-term non-replacement of oil, precipitation of valves, excessive heat wear and tear, and high post-term failure。
4. E-cvt for oil blending
The increased frequency and temperature of the mixing transformer, the faster aging of the fluid, and the long-term non-renewal of the oil, make it highly likely that the power links will not be smooth and the noise will increase。
Iv. The rumour: is there a real life-free existence
It doesn't exist
None of the mobile cars currently available on the market can actually be replaced for life。
The so-called exemption is only for the company to lower the maintenance promotion threshold and is only suitable for a short-term, six to eight-year-old changer。
If a car is intended to drive for more than 10 years and to run for 100,000 kilometres, it is absolutely necessary not to change gear tank oil。
V. Best fuel cycle on the whole network. Just do it directly by car type
Harmonization of landing standards for ordinary homeowners (normal household conditions, non-violent driving, non-mountain bad roads) in conjunction with the original plant maintenance manual:
1. At automatic transformer: 60,000 km or 5 years, whichever is first
2. Cvt ungraded gearbox: 40,000-6,000 km or 4 years, priority for early replacement
Wet double fusion: 60,000 km or 5 years
Dry double fusion: 80,000 km or 6 years
5. Oil mixed e-cvt gearbox: 50,000 km or 4 years
Brief summary: drive by age, drive by miles。
Only a few thousand kilometres a year, even if the mileage is very low, is recommended for replacement after five years because the fluid is naturally oxidized。
Vi. Oil-replacement pits: how can we choose a gravity-replacement vs cycle machine
1. Gravity-for-oil (price preference, 90 per cent for owner)
As in the case of refuelling, the oil screws naturally oil and replace the internal filter core。
Advantages: cheap, safe, non-destructive valves, no trouble risk
Shortcomings: the oil is clean enough to replace about 60%. Old oil
Suitable: up-to-date maintenance, first oil change, home-use walker
2. Cycle machines for oil
The machine recycles for oil, more thoroughly。
Disadvantages: high fuel consumption and high prices; long-term non-replacement of oil and oily old vehicle bans
Focus on the old car that hasn't changed oil for more than six years. Don't use the cycle machine
High-pressure flushing will wash the sedimented oil out and block the oil trail, directly inducing transmission of transmission box failure, and gravity switching is the only safety option。
Summary of the full dry product
The oil in the gearbox is long-term and does not break the gearbox in an instant, but it will continue to accumulate wear and tear, jam oil roads, cause high temperatures and aging, slowly evolving from a slight setback to slide, valve damage and serious malfunctions requiring major repairs。
There is no real life-free gearbox, short-term car replacement can be delayed appropriately, long-term household, 10 years old, and must be replaced on a cycle basis。
Cvts, wet transformer tanks are refuelled, and dry doubles are delayed appropriately, with the old car choosing only gravitational swaps, which are the least expensive and most protective gearbox maintenance options。
Safe car warm tips
The maintenance of the gearbox is focused on prevention and does not wait for failure to be repaired; when oil exchange occurs, as much as possible is accompanied by the replacement of the core of the gearbox, which is cleaner and longer than the useful life of the gearbox。
Interactive topics
How many miles did you drive? Have you changed gear tanks so far? Have you encountered any blockage problems? Talk to the comment section
Disclaimer
This paper is a general maintenance unit for domestic gearboxes, with slight variations in the structure of different branded vehicles and the original plant maintenance cycle, and specific maintenance options may refer to the original vehicle plant manual and do not constitute recommendations for repair or retrofitting。
