Making Your Car Run Longer in Montérégie

J.C. Transmission is pleased to share with you some tips to make your vehicle run longer and preserve its integrity:

The Importance of Oil Changes

Over 90% of transmission failure is caused by overheating, which causes oil contamination. As for the engine, the transmission's worst enemy is heat, which deteriorates clutch discs and planetary gears. Once this process begins, the vital parts of your transmission get clogged with sludge and varnish. This is the beginning of the end.

An engine can be drained of all its oil. When you remove the pan from a transmission, only a small fraction of oil can be drained. The transmission converter, valve body and cooling system still contain contaminated oil.

In fact, more than 75% of the old oil is still present in the gearbox. That leftover oil will immediately affect the little bit of new oil you add to the pan.

At J.C. Transmission, we can fix this problem. We have a device designed to remove all used oil, whether it be contaminated or shows signs of deteriorating. The method is as follows:

  • Under pressure, the device forces new oil throughout the gear box
  • Used oil is collected and disposed of in compliance with environmental regulations
This process allows us to change up to 98% of the oil contained in the transmission. In addition, we change the filter and add a conditioner to recondition the transmission’s lip, glad and o-ring seals.

If your transmission shows any sign of contaminated oil (it slips, the gear changes are too sudden or take too long) phone us without delay. Our preventative maintenance can save you from spending hundreds of dollars in major repairs.

Make an appointment. Our technical specialists will answer your questions and advise you on what needs to be done for your transmission.

Auxiliary Coolers

Is your truck always overloaded? Does your car tow a camper or tent trailer? Does your vehicle transmission seem to overheat?

We have the solution. An auxiliary cooler for the transmission can be a wise investment for your vehicle.

When the automatic transmission in your vehicle is working harder than normal, its operating temperature rises. In some cases, the transmission oil may overheat and even come to a boil. It becomes discoloured and the internal components get damaged very quickly.

An auxiliary transmission oil cooler, installed in front of the vehicle radiator, will help significantly reduce the oil temperature.

Transmission operating at lower temperature levels will be more efficient and its durability will be extended.

We can also install a temperature gauge, so you can always keep an eye on your transmission operating temperature.

Several cooler models are available – contact our staff without delay. Our technicians will advise you and install the cooler that is right for your vehicle.


External Inspection

Vehicle owners always think of rotating the tires, changing the oil, inspecting the radiator and hoses, etc. However, automatic transmission maintenance is the one thing most often overlooked. At J.C. Transmission, we would like to remind you of these 10 important points:

  • Change transmission oil and filter regularly
  • Consider adding an auxiliary cooler on vehicles with heavy usage
  • Check the level and appearance of your transmission oil
  • A poor ground connection can damage the transmission
  • The radiator must be free of any restrictions
  • Drive belts and radiator hoses must be in good condition
  • When you are stopped in heavy traffic, put the transmission in neutral
  • Do not use the OD position on hilly roads
  • Regular transmission maintenance can save you time and money
  • Never tow loads heavier than manufacturer's specifications

An Accurate Diagnosis Will Save You Time and Money

Today's vehicles are equipped with computers and complex electronic circuits. Several components or accessories, such as a remote starter or antitheft system can affect the efficiency of the transmission if not installed properly. At J.C. Transmission, we have the electronic equipment needed to perform a quick and accurate diagnosis.

Is your transmission oil always too low? Do you think your transmission oil is leaking? Call us for an appointment. Our technicians will determine the exact cause of the problem.

Your Transmission and Towing

When you attach a trailer to the back of your car or your truck, the question always remains the same:

Should I put the shift in D or OD?

It is important to know that the transmission reacts according to engine demand. The powertrain computer continuously analyzes the engine data, so if the engine is forcing more than normal, gear changes will be delayed or the kickdown will be activated.

When your vehicle is overloaded, you should shift to D and go back to OD when the vehicle speed is stabilized. Otherwise, you will notice an up and down sensation as the transmission shifts from OD to D and back. Over time, this will damage the transmission. However, when going down a hill, you can shift from OD to D.

This way you will be using the motor’s power to slow you down, a little like a Jake brake.

It is also very important to check the status of your transmission before starting to tow. A transmission oil change, filter change and addition of an auxiliary cooler will protect your transmission and give you peace of mind in your travels.

Do not hesitate contact our staff. Our experienced technicians can advise you on the preventive maintenance your transmission needs.


Replacing an Automatic Transmission

Several reasons can cause an automatic transmission failure. As transmission specialists, we come across more evidence than most people think.

How to Know if the Fluid Level is Low

The conditions inside the transmission will be identical to a low pressure issue because low pressure is the result of low liquid levels. A quick indicator is the condition of the forward clutch. In most transmissions, it is a constantly functioning clutch with a high capacity. If the forward clutch discs are defective or show signs of wear and there is no pump failure or damage to the hydraulic circuit (ring or sealing ring, O-rings, etc.), it is a good indicator that the fluid level may be too low. If the 2nd gear clutch discs also show signs of weakness and the others are in good condition, you have an additional confirmation.

Damaged transmissions are not the result of a voluntary act, but simply a combination of defective parts (dipstick), a lack of knowledge on how to check the accuracy of the gauge and in some cases, failure to fill up the transmission correctly. Good filling practices include a short test drive by passing each shift and a fluid level check.

However, liquid level control cannot be performed properly if the gauge is not accurate. This check must be performed before the transmission is installed or by other methods, including:

  • verifying the accuracy of the gauge
  • insert 4-6 liters of liquid before starting the engine
  • starting the engine and continue filling while checking the level
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