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By Counterman
On modern vehicles, overheating is a rare occurrence thanks to high-quality hoses, thermostats and better engine management. Unfortunately, the weak point is still the coolant. Whether it’s a 100,000-mile or 150,000-mile coolant, eventually it will break down and lose the ability to protect the components with which it comes into contact.
Coolant at 100,000 miles may look the same as coolant with zero miles, as the real difference between good and bad coolant can’t be seen with the naked eye; it is in the chemistry and based on mileage.
Coolant contains additives called buffers that keep it at a neutral pH but these buffers are meant to last forever. When these chemicals become depleted, the pH can’t be controlled. It rises dramatically in a short period of time the moment the buffers are fully depleted. This is why replacing the coolant at the recommended interval is critical.
Coolant has two specifications that can be used to justify replacement — the condition of the additive package and the freezing point.
The additive package is the secret sauce for a coolant. Its main function is to control corrosion. Other components of the additive help with heat transfer and cavitation reduction. Some additive packages use seal conditioners to extend the life of the gaskets and plastic carriers.
The freezing point is measured by the overall specific gravity of the coolant, which has a direct relationship to the coolant/water mixture. This test can help spot coolant that has been compromised by the owner topping off with water. This measurement works well on systems that do not have pressurized reservoirs.
The strength or freezing point of coolant can be measured with a simple hydrometer. This device uses a calibrated float or plastic balls (not as accurate) to show the specific gravity of the coolant. This, in turn, shows how much freezing/boiling protection the coolant offers. You must remember to compensate for temperature because the specific gravity (density) of the coolant is lower when the coolant is hot.
The more professional tool for this purpose is an optical refractometer because it is very accurate and automatically compensates for temperature. Be aware: these are not simple, inexpensive tools. A refractometer can cost up to $300 or more because of the precision optics in its lens. Ethylene glycol (EG) and polyethylene glycol (PG) antifreeze have slightly different densities, so you have to use a hydrometer or refractometer with the appropriate scale (or one with a dual scale) for accurate test results.
Color-coded chemical test strips that are dipped into the coolant can be used to quickly and easily reveal the condition of the coolant. These strips of coated capillary paper react to the presence of certain dissolved minerals in the coolant and change color to give a good, marginal or bad indication of the coolant’s pH condition. Some test strips also show the concentration of antifreeze in the coolant.
The added benefit of test strips is that the results can be shared with the owner by attaching the used strip to the inspection form.
But, mileage is the gold standard for any coolant replacement recommendation. Engineers and chemists spend a lot of time formulating the coolant to match the engine and interval.
If you are performing a water pump, heater core or hose repair, recommend a full coolant flush. Just topping off the coolant can lead to a mixed bag when measuring the pH and freezing point. Also, check the specific gravity before a repair. Many customers know how to top off their coolant with water that could dilute the coolant concentration.
Selling any fluid maintenance service is difficult these days. But, if you document and educate customers on the importance of coolant, it becomes more than just an “add on” service.
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By NAPA
Is your car not shifting gears like it used to? An automatic transmission makes driving much less complicated than the manual gear (stick shift) alternative. But that convenience comes at the price of complexity. When an automatic transmission equipped car won’t shift gears, there could be several potential issues. These issues can range from a simple fix to needing a complete transmission rebuild. Below is technical expertise on “Why is my automatic car not shifting gears?”
Low Transmission Fluid link hidden, please login to view
Your automatic transmission relies on hydraulic fluid pressure to operate. The pump pulls
link hidden, please login to view from the transmission pan reservoir to actuate different components. If the transmission fluid level gets low enough, the pump will be unable to push fluid where it needs to go. Even worse, the pump will pull air into the system, which could lead to a lack of lubrication that damages parts. If you are lucky, your vehicle has a transmission fluid dipstick so you can easily check the fluid level according to the instructions in the owner’s manual. If your vehicle does not have a transmission fluid dipstick but is “
link hidden, please login to view”, that doesn’t prevent you from checking the fluid level. In most cases, the fluid can be checked via a fill plug, but the transmission has to be at a certain temperature and the vehicle must be level. This isn’t an easy task, so it might be best to have your local link hidden, please login to view do it for you. Faulty Shift Solenoid
We just mentioned how an automatic transmission relies on pressurized fluid to operate, but that fluid also needs to be routed to where it is needed. In a modern, electronically controlled automatic transmission, shift solenoids control the flow of transmission fluid. If the shift solenoid is faulty, then the fluid won’t be routed to the desired shift actuator. In older non-electronically controlled transmissions, shifting was controlled by shift valves, but the idea is the same. Shift solenoids can wear out or get stuck, leading to a no-shift condition. Fixing a faulty shift solenoid usually requires removing the transmission fluid pan to access the transmission valve body.
Low Transmission Fluid Pressure
You should be seeing a pattern of how important hydraulic fluid is to the operation of an automatic transmission. If the transmission fluid level is fine, there may still be a problem with the fluid pressure. Low fluid pressure can be caused by a worn out pump, clogged fluid passages or a clogged transmission fluid filter. A lack of shifting car gears due to low fluid pressure usually means it is time for a
link hidden, please login to view. If the problem is with the pump itself, then you are probably looking at a transmission rebuild. Bad Transmission Control Module
Most modern automatic transmissions have an electronic
link hidden, please login to view (TCM). The control module takes input from various sensors, and decides how the transmission should react. Depending on where the control module is mounted, it can lead a very hard life. Extreme temperatures, vibrations, leaking fluids and sometimes even how the circuit board is built can all lead to failures of microchips and other electronic components. If the check engine light is on while you are having shifting problems, the TCM may be the issue. Broken Shift Cable
Each time you drive, the shifter is moved at least twice, once for driving and again for park. That movement adds up over the years. While an automatic transmission doesn’t have the complicated shifting mechanism of a manual transmission, there is usually a physical connection between the shifter and the transmission. Modern
link hidden, please login to view usually have plastic components that can break down over time. There may also be bushings that get worn out. The shift cable itself is usually metal and rarely breaks, but the pieces connecting it to the transmission can possibly fail. Shift Lock Engaged
If the car is not shifting into gear from park, then the issue might be the gear shift interlock. Most modern vehicles have a lockout on the automatic gear shifter that requires the brake pedal to be pressed first. If the brake pedal isn’t pressed, the shifter won’t move. It is possible that the brake pedal sensor doesn’t read that the pedal is pressed, or a break in the shift interlock circuit interrupts the connection. The shift lock can be
link hidden, please login to view. Worn Out Bands
Just like how brake pads can wear out, so can the friction materials inside the transmission like the bands. Transmission bands hold certain components in place, while others are allowed to rotate. When this happens, the transmission won’t go into certain gears. Unfortunately worn out bands usually mean a complete transmission overhaul. Material from the worn out bands can make their way into sensitive fluid passages, clogging them or causing accelerated wear
Failed Throttle Sensor
This one may seem odd, but gauging how much throttle input the driver is giving makes a big difference in how the transmission acts. Whether the input is from a
link hidden, please login to view or a cable, if the driver pushes down the gas pedal, the transmission needs to change gears. But if that input isn’t received, the transmission has no idea what the driver wants to do. If the transmission doesn’t know the driver is hitting the gas, it might not shift into the next gear. Even worse, on some older transmissions, if the transmission isn’t linked correctly to the throttle input, severe damage can be done. If your transmission isn’t shifting like it used to, simply head to your local
link hidden, please login to view center. Our team of ASE-certified technicians have the expertise and training to diagnose your automatic transmission issues. As a bonus, your repair is covered by our free 24-Month/24,000-Mile link hidden, please login to view (parts and labor on qualifying repairs and services), which spans across the entire nationwide NAPA Network, including 17,000+ NAPA Auto Care center locations. Photos courtesy of
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By Counterman
Applications are being accepted for the Federated Car Care Scholarship program.
Interested students should complete and submit their applications at
link hidden, please login to view by March 31. The Federated Car Care scholarships are funded by Fisher Auto Parts in memory of Art Fisher, founder of Federated Auto Parts and the Federated Car Care program. Qualified candidates should specify “Federated” on their application when applying online.
Administered by the University of the Aftermarket Foundation (
link hidden, please login to view), the scholarships will be awarded to employees and children of active Federated Car Care Center members attending a two- or four-year accredited college, an ASE/NATEF-certified post-secondary automotive, heavy-duty or collision technician training program or any licensed and accredited vocational school. Students graduating from high school in 2024 and heading to any of these post-secondary programs also are eligible. “It is a privilege for us to once again provide scholarship opportunities to the children and employees of Car Care members, assisting them in furthering their education,” said Bo Fisher, chairman and CEO of Fisher Auto Parts. “The University of the Aftermarket Foundation’s AutomotiveScholarships.com website streamlines the application process. We urge all interested candidates to submit their applications by March 31 and look forward to awarding Federated Car Care scholarships to another group of deserving young men and women for the 2024-25 academic year.”
Federated is one of more than 30 other organizations awarding scholarships on
link hidden, please login to view. As an added benefit for students who apply at this site, each completed application will be considered by every scholarship where the candidate meets the qualifications. The post
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By Counterman
new national survey by Atomik Research reveals 91% of American motorists say they’ve experienced a dead battery, but nearly two-thirds (65%) of motorists admit they don’t think about having their car battery checked until it’s too late.
To raise awareness of the importance of having a reliable car battery, Advance Auto Parts is giving away free DieHard batteries on National Battery Day, which is Sunday, Feb. 18.
Advance said it will surprise randomly selected customers with a free DieHard battery, including those getting their current battery tested, at participating stores nationwide.
As part of National Battery Day, Advance is partnering with Tampa Bay Buccaneers quarterback Baker Mayfield to encourage motorists to get their car batteries tested.
“Checking the performance of your car battery can prevent unfortunate and even unsafe events caused by dead batteries,” said Junior Word, Advance’s executive vice president, U.S. stores.
Additional data from the national Atomik survey commissioned by Advance in January underscores the need to remind motorists to get their car batteries checked:
Sixty-five percent of motorists say they’ve missed or been late to something due to a dead car battery; nearly 10% say they missed or were late to an important life event – such as a wedding, funeral or birth of a child. Only 2% of motorists indicate they’ve had their car battery checked before a cross-country road trip. Only 5% of motorists report having ever checked their car battery when there is a drop in temperature. The post
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By Advance Auto Parts
Advance Auto Parts Puts a Charge in American Motorists on National Battery Day With Free DieHard® Auto Batteries Giveaway and Complimentary Battery Testing Nationwide Feb. 18
02/14/2024 New survey reveals 91 percent of motorists have experienced a dead battery, but nearly two-thirds admit they don’t think about having their car battery checked until it’s too late
RALEIGH, N.C.--(BUSINESS WIRE)-- Advance Auto Parts (NYSE: AAP), a leading automotive aftermarket parts provider, is jump-starting motorists’ attention to the safety and reliability of their automobiles by giving away free DieHard® batteries on National Battery Day, Sunday, Feb. 18.
This press release features multimedia. View the full release here:
link hidden, please login to view Customers who visit their local Advance Auto Parts store on National Battery Day, Sunday, February 18, may be randomly selected to receive a free DieHard auto battery. (Photo: Business Wire)
A new national survey by Atomik Research reveals 91 percent of American motorists say they have experienced a dead battery, but nearly two-thirds (65 percent) of motorists admit they don’t think about having their car battery checked until it’s too late.
On National Battery Day, Sunday, Feb. 18, Advance will surprise randomly selected customers with a free DieHard® battery, including those getting their current battery tested, at participating stores nationwide. As part of National Battery Day, Advance is partnering with pro football star quarterback Baker Mayfield to encourage motorists to get their car batteries tested.
“Our team of automotive experts are committed to customer care and advancing the needs of today’s motorists, such as offering complimentary curbside battery testing and installation every day, including on National Battery Day, Sunday Feb. 18,” said Junior Word, Advance’s executive vice president, U.S. stores. “Checking the performance of your car battery can prevent unfortunate and even unsafe events caused by dead batteries.”
Additional data from the national Atomik survey commissioned by Advance in January further validates the need to remind motorists to get their car batteries checked:
65 percent of motorists say they have missed or been late to something due to a dead car battery, including nearly 10 percent say they missed or were late to an important life event – such as a wedding, funeral or birth of a child Only 2 percent of motorists indicate they have had their car battery checked before a cross‑country road trip Only 5 percent of motorists report having ever checked their car battery when there is a drop in temperature To learn more about Advance’s car care offerings, including DieHard®, or find a store location, visit
link hidden, please login to view. DieHard® is America’s most trusted auto battery* and part of Advance’s portfolio of owned brands. About Advance Auto Parts
Advance Auto Parts, Inc. is a leading automotive aftermarket parts provider that serves both professional installer and do-it-yourself customers. As of October 7, 2023, Advance operated 4,785 stores and 320 Worldpac branches primarily within the United States, with additional locations in Canada, Puerto Rico and the U.S. Virgin Islands. The company also served 1,307 independently owned Carquest branded stores across these locations in addition to Mexico and various Caribbean islands. Additional information about Advance, including employment opportunities, customer services, and online shopping for parts, accessories and other offerings can be found at
link hidden, please login to view. Fleishman-Hillard, Inc. and Advance Auto Parts commissioned Atomik Research to conduct an online survey of 1,004 drivers throughout the United States. The sample consists of adults who own or regularly operate a gasoline-powered vehicle — hybrid and EV drivers were excluded from the sample. The margin of error is +/- 3 percentage points with a confidence level of 95 percent. Fieldwork took place between January 9 and January 11, 2024.
* Based on 2021 independent survey of nationally representative sample of 1,200+ drivers.
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