Aamco Transmission and Complete Auto Repair

10022 San Jose Blvd
Jacksonville, FL 32257
(904) 203-5222
Monday- Friday: 8AM - 6PM
2664 US 1 South
St. Augustine, FL 32086
(904) 203-5190
 Monday - Friday: 8AM-5:30PM
Sat-Sun Closed  
356 Blanding Blvd,
Orange Park, FL 32073
(904) 203-5188
 Monday- Friday: 8AM - 6PM
Due to current COVID-19 concerns, we have implemented multiple procedures to limit your need to visit our location in person and to ensure that all surfacesare sanitary both in our waiting areas, work areas as well as in your vehicle.  
Please call us to let us know what’s going on with your vehicle and we will gladly do everything possible to get you back on the road!  

Cooling System Repair & Maintenance


Today’s automobiles use aluminum radiators to transfer heat from the hot coolant flowing through the radiator to the air blown through it by the fan. The radiator and fans serve to keep the engine and the transmission at acceptable temperatures. On most automobiles with automatic transmissions, automatic transmission fluid is routed through an oil cooler inside the radiator.

Maintenance and automobile:

A radiator leak between the coolant and the automatic transmission fluid can contaminate the transmission fluid and cause transmission failure. Red or brown drops of oil in the coolant would be a symptom of such a leak. Because the transmission oil cooler is inside the radiator, the radiator must be replaced in order to eliminate the problem.AAMCO’s External Diagnostic Service for transmissions and 36-point ProtectCheck can help to pinpoint problems in the radiator and cooling system.


Antifreeze/coolant, when used properly, serves to prevent freezing, boiling and corrosion in the cooling system. Your owner’s manual indicates the correct antifreeze/coolant for your specific automobile.

Maintenance and automobile:

Cooling system failure is the leading cause of mechanical failure on the highway, according to the U.S. Department of Transportation. Generally, antifreeze/coolant should be changed by an AAMCO mechanic about every two years or 24,000 miles, and many automobile professionals believe annual changes are warranted for late model automobiles with aluminum radiators. The main issue is corrosion resistance; if the antifreeze/coolant loses its ability to inhibit corrosion, the result can be expensive internal corrosion in the radiator, heater core and engine. The only way to know if the antifreeze/coolant still has adequate corrosion protection is to test it, which can be performed for your automobile by the trained mechanics at AAMCO. Please refer to your owners manual for factory recommended maintenance intervals for your specific automobile.


The thermostat regulates the cooling systems temperature. When the engine is cold, the thermostat stays closed and allows the coolant to keep flowing within the engine and warms the coolant quickly. As the engine warms, the thermostat opens.

Maintenance and automobile:

Have your thermostat and entire cooling system checked annually by an AAMCO mechanic (they are inspected as part of AAMCO’s ProtectCheck). A bad thermostat can cause a variety of problems, from overheating, knocking, high idle speed, low temperature gauge readings, even an emissions test failure.

Services   Hours Of Operation 
  • TranScan Diagnostic
  • Transmissions
  • Transmission Maintenance
  • Check Engine Light On?
  • ProtectCheck
  • Brakes
  • Oil, Lube & Filter Change
  • Air Conditioning
  • Tune-Up
  • Cooling System
  • Exhaust/Muffler
  • Shocks/Struts
Monday-Friday  8:00 A.M - 6:00   P.M
Saturday Closed
Sunday  Closed
Aamco Transmission and Complete Auto Repair 10022 San Jose Blvd, Jacksonville, FL 32257 (877) 646-0229
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