All the secrets and rules of the reference with automatic transmission
We have collected for you the most complete collection of professional tips on how to “live with automatic transmission”. What you can do with this box and what is not, how to recognize the impending end of the box, is it possible to start the car with the automatic transmission with the tow how to operate it in the winter, as not “to kill”, etc.
How to check the oil level in automatic transmission?
For most cars the oil level (ATF) in the automatic box changes gear (automatic transmission) is checked with the engine running and installing selector lever range (RVD) to position “P”. On the dipstick to measure the oil in the automatic transmission usually has multiple labels. The top two, and sometimes the only, correspond to the normal oil level, warmed up to operating temperature (90°C). Often this section of the dipstick marked with a notch and/or label “Hot”. In order for the oil in the automatic transmission warmed up to operating temperature you have to drive 15-20 kilometers. After warming the oil in the automatic transmission place the vehicle on a flat, horizontal platform. Pull the dipstick from the transmission, and wipe it. Then insert the probe back into the probe tube until it stops and extract again. The lowermost, dry place on the dipstick and will correspond to oil level in the automatic transmission. Sometimes on the dipstick, there is also the bottom label corresponding to the level of cold. This label is intended to approximate the amount of oil filled in the case of its replacement. The final level, still should be checked after warming the oil.
What is dangerous low or high oil level in automatic transmission?
Too low ATF level is dangerous because the pump together with the oil starts to gulp air. The result is the air – oil “emulsion,” which is well compressed and has a low heat capacity and thermal conductivity. Oil loses the most important of its properties and becomes compressible. The result will be a reduction of the pressure in the control system, poor heat from the automatic transmission, deterioration of lubrication of the friction elements. The operation of the car with foamed oil in the automatic transmission quickly bring the box down. I would like to note that it is not to be confused with some large air bubbles in the oil on the dipstick (which sometimes happens) with a foaming oil which is a uniformly foamed liquid with very small air bubbles. Foaming of the oil increases its volume, so when checking the level, it will be inflated. In this case, stop the engine and give the oil to stand for some time, and then, without starting the engine, check the oil level. If the probe will be completely dry, then you can safely pour the liter or even two. Oil may foam and rotating parts of the transmission, if the level exceeds the permissible value. In this case, the oil start to plunge the rotating parts of the transmission system and churn it. Foaming does not occur immediately after starting the engine, as in the case of a low level, and in the process of movement, especially with high engine speed. As in the case of low oil level or excessive level of oil foaming leads to increase of its volume, and, consequently, to its discharge through the breather for the transmission. Looking under the car, you can often see that the entire box in oil. This is the case in practice. Ford Explorer came the diagnosis with a complaint of that level, something’s going wrong. Level – that is, that there is, and automatic transmission covered in oil. In an interview with the client revealed that the probe was lost and replaced with a new one, ordered by VIN at the dealer. When comparing probe and probe arm of the tube it appeared that the probe is much shorter than the tube. The ATF level was right at the level of the axis of the box. (Usually the level is about flush with the pan gasket). Thus, a customer complaint was caused by the too high level of ATF in the automatic transmission.
How much oil should be poured into the transmission?
Depending on the type of transmission can accommodate the 4.2-liter (DAIHATSU TERIOS) to 15.5 liters of ATF (FORD EXPEDITION). It should be borne in mind that when you replace drained not the entire volume of oil. Part of the oil remains in the channels of the control system, and, in addition, not all transformers have plugs for draining the oil. Therefore, when oil is drained part of it is left in automatic, but it is possible. If You want to completely change the oil, you need two or three oil change.