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Automatic transmission fluid (ATF) turns chocolate brown or mud-like

Automatic transmission fluid (ATF) turns chocolate brown or mud-like

Automatic transmissions are very delicate part of automobiles. They ought to be handled with care and good maintenance culture. 
One of the practices that kill automatic transmissions is the use of incompatible automatic transmission fluid in them. 
Automatic transmission fluids transform in different ways depending on the cause, ranging from age, overuse, water intrusion into the transmission, transmission overheat, clutch wear, incorrect fluid and so on. .. 
The one we shall discuss here is quite uncommon and that is automatic transmission fluid looking like chocolate or mud. 
We are going to be using a case study; a 2010 model Toyota camry hybrid. 
Before we assessed this vehicle, the code that the vehicle was diagnosed to have..

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Causes of burnt or blown cell in hybrid vehicle battery pack

Causes of burnt or blown cell in hybrid vehicle battery pack

One might wonder what can possibly cause just a single cell to get blown amongst many other cells in a hybrid vehicle battery pack. Users who encounter this situation are left with questions rather than answers. Even technicians are sometimes at loss on the cause of this type of situation.
There are two major causes of blown hybrid pack cell. I will explain them one after the other.

High terminal resistance: As the hybrid vehicle and the battery pack age, the terminals of the cells develop high resistance due to the connection of the cells. Normally, preventive maintenance cleaning should be done on these terminals to ensure good contact and uniform resistance of the terminals across the cells. Now, let us look into how the high resistance causes a cell to get blown. From basic o..

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How to clean cooling  system that is contaminated with engine oil or transmission oil

How to clean cooling system that is contaminated with engine oil or transmission oil

A very frustrating situation can arise where either the engine oil or automatic transmission fluid finds its way into the cooling system and mixes with the coolant solution.
This can happen through the following;

Leaking cylinder head gasket
Cracked cylinder head
Faulty engine oil cooler
Faulty transmission oil cooler
Human error (pouring engine oil into the coolant reservoir or expansion tank) 

Removing oil from the cooling system can be a very difficult task to accomplish and it is one that requires a lot of patience and perseverance. 
Luckily, commonly available dishwashers are very effective for getting rid of oil from the cooling system.
Before starting this cleaning process, ensure that the cause of the coolant and oil mixing is al..

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Cooling system's Thermostat removal should be temporary, if necessary.

Cooling system's Thermostat removal should be temporary, if necessary.

Many people have asked whether it is good to remove the thermostat in their cars.
For fuel economy and engine longevity concerns, the best is the have the engine's Thermostat in place. This can make the rings still be in good shape after many miles.
Where proper maintenance of using coolant solution and replacing the coolant (causing severe rust and/or scale formation) and Thermostat periodically are not followed, as in the case of many users in Nigeria, REMOVE THE THERMOSTAT to protect the engine from catastrophic failure as a result of overheat. Thermostat removal should normally be a temporary measure till you can get the cooling system clean, get quality coolant and quality Thermostat. Thermostat removal can be done for the purpose of troubleshooting too and then returned back to..

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How a poorly maintained cooling system can damage a car's transmission

How a poorly maintained cooling system can damage a car's transmission

There are some cars that have transmission heat exchangers attached to the bottom of the radiator. Mineral deposits as a result of prolonged use of water can go settle at the water passage side of the oil cooler and block it. You will then have only ATF circulating but not water and hence no heat exchange. This is the beginning of the end of such transmission.
As the transmission will be overheating especially during high ambient temperatures, sporty or high speed driving.
This is because there would no longer be heat transfer from the transmission fluid to the coolant.
The transmission overheats, oil gets burned, clutches wear out, solenoids overheat and gets damaged, electrical wires resistances increase and so on.
This can be prevented by ensuring that the cooling system mai..

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Coolant versus water in a car's cooling system

Coolant versus water in a car's cooling system

Many vehicle users do not see the need to use coolant in their vehicles simply because they put in water and their vehicle runs fine simply because they are unaware of the long term negative effect that it will have on their vehicle's cooling system and the engine itself.
Now, let's see how coolant performs when used and how water performs when used in the cooling system.
• Ordinary water - let's say either tap, well or borehole water. These water contain minerals that cause corrosion to engine block, piping and radiator core. Those minerals also cause scale formation. For better understanding, check your old home electric kettle, you will notice a brown layer under, that is scale! When water that contains these salts evaporates, it leaves behind the salts that forms scale.&..

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Tire inflation tips for safety and tire longevity

Tire inflation tips for safety and tire longevity

*Do not over inflate your tires, it causes tire deformation which may lead to tire burst, poor handling, bumpy ride, decreased braking, ABS malfunction..
* Do not under inflate your tires, it causes overheating due to sidewall over flexing, high rolling resistance leading to increased fuel consumption, tire burst,
*Cold inflation pressure is always lower when tire is cold than when  heated up. Always check your inflation pressure when tire is cold. Pressure can rise by up to 4 psi when tire is hot. There is about 1 psi increase in pressure for a 10 degree rise in temperature
*Tires require less refill when nitrogen gas is used in place of air. Tires have microscopic pores through which air can escape over time. With nitrogen which have bigger molecules than oxygen, tire p..

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