Why Is My Car Leaking Fluid?

September 12, 2024

Why Is My Car Leaking Fluid?


If you've been putting off that transmission service, it might be time to reconsider. At Wayside Garage, we recently had a 2014 Ford C-Max come in with a fluid leak that seemed to be engine oil at first. Upon inspection, however, we discovered it was actually transmission fluid leaking from a worn transmission cooler line. This isn't uncommon, especially in older vehicles. Over time, seals can become brittle, allowing transmission fluid to leak and cause serious damage.


What Causes Transmission Leaks?

Transmission cooler lines are vital to regulating the temperature of your transmission. These lines transport fluid to the cooler, preventing the transmission from overheating. Unfortunately, the seals that connect the cooler lines to the transmission can become hard and brittle with age and mileage, allowing fluid to seep out. Once the fluid leaks, your transmission could face overheating and internal damage.


In this case, we also noticed the transmission fluid had deteriorated, turning color and smelling burnt. That’s a clear sign it’s time for service. Catching it early and getting the fluid replaced and the cooler line repaired avoided a much more expensive transmission repair.


The Importance of Regular Transmission Service

Transmission fluid plays a critical role in lubricating the moving parts of your transmission and keeping it cool. As vehicles age, regular transmission service is necessary to prevent wear and tear, as well as costly repairs. At Wayside Garage, we recommend servicing your transmission every 30,000 miles or every three years, whichever comes first. This service includes replacing the fluid, inspecting the transmission, and addressing any potential issues before they escalate.


Signs You Need Transmission Service:

- Fluid leaks under your car
- Delayed shifting or slipping gears
- A burnt smell or discolored transmission fluid
- Strange noises while driving, especially when shifting gears


The Cost-Effective Approach to Car Ownership

Maintaining your vehicle with regular inspections and transmission service is much more affordable than replacing the transmission—or worse, the entire car. Transmissions are one of the most expensive components to replace, but with routine service, you can extend its lifespan and avoid major repairs.

At Wayside Garage, our ASE-certified technicians can inspect your vehicle and recommend the best course of action. If you're due for a transmission service or suspect a leak, give us a call at (831)-899-2425, or schedule an appointment online at www.waysidegarage.com.


Sabrina from Wayside Garage in Seaside CA discussing vehicle ownership costs and auto repair priorit
By Stacey Diaz June 29, 2026
Wondering if your car is worth fixing? Discover the hidden costs of replacing a vehicle on the Monterey Peninsula and learn how a proactive repair plan can save you thousands.
By Wayside Garage June 23, 2026
Expert transmission repair by Wayside Garage in Seaside, CA. Enhance vehicle performance with our skilled technicians. Schedule an online appointment now.
Close-up of fresh motor oil being added to an engine during an oil change and multi-point digital in
By Stacey Diaz June 22, 2026
Time for an oil change near me? Learn how regular preventative maintenance and digital vehicle inspections at Wayside Garage protect your car and save you money.
Banks Monster Ram intake manifold and heater upgrade kit laid out for installation at Wayside Garage
By Stacey Diaz June 15, 2026
Protect your truck from catastrophic failure. Learn how a Banks Monster Ram upgrade prevents the costly Ram 3500 "bolt of death" at Wayside Garage.
By Stacey Diaz June 8, 2026
Beat the Inland Heat: 4 Common Reasons Your Climate Control Has Lost Its Cool on the Monterey Peninsula
By Stacey Diaz June 1, 2026
Mechanic Near Me
By Wayside Garage May 26, 2026
Discover expert brake repair in Seaside, CA at Wayside Garage. Ensure safety with our reliable service. Call us today!
Complete summer car maintenance checklist inspection at Wayside Garage auto repair Seaside Monterey
By Stacey Diaz May 25, 2026
Heading out on a California road trip this summer? Use this complete pre-trip car maintenance checklist from Wayside Garage in Seaside, CA to make sure you are ready.
Check engine light illuminated on car dashboard — auto diagnostic near me Seaside and Monterey CA
By Stacey Diaz May 18, 2026
Don't panic - but don't ignore it. Wayside Garage in Seaside has the advanced diagnostics to find what other shops miss. Here's what your check engine light is telling you.
Precision ADAS wheel alignment diagnostic measurement at Wayside Garage serving Seaside and Monterey
By Stacey Diaz May 11, 2026
Misalignment can knock your ADAS safety systems out of calibration. Wayside Garage in Seaside now offers precision wheel alignment with ADAS recalibration. Book today.
More Posts