Coolant
Motorcraft Premium Gold, yellow, Ford VC-7-B; specification WSS-M97B51-A1. The manual says use the coolant originally equipped and do not mix types.
Open coolant type source2010 Ford Focus · L4-2.0L manual selection
2010 Ford Focus Radiator Replacement: Factory References
The checked factory manual includes a radiator and cooling-fan exploded view, coolant specifications, drain/fill/bleed instructions, and leak-test references for the Focus L4-2.0L.
A radiator removal and installation procedure was not present in the checked manual tree
The 2010 Focus L4-2.0L index links the Radiator section to Testing and Inspection. The inspected cooling-system tree contains coolant draining, filling and bleeding, system pressure testing, radiator leak testing, and the exploded view, but no radiator removal/install leaf. The references below do not replace the vehicle-specific removal procedure. Confirm the correct service information and VIN-specific parts before beginning the repair.
Cooling-system safety
Ford warns to let the engine cool before opening the pressurized cooling system. Hot coolant and steam can escape forcefully. Use a suitable collection container and dispose of used coolant correctly; never work under a vehicle supported only by a jack.
Checked factory specifications
System capacity
5.3 qt (5.0 L) engine coolant for the checked 2.0L application. This is the listed system capacity, not a guaranteed service refill amount.
Open capacity sourcePressure-test limits
Complete system maximum: 150 kPa (21.7 psi). Pressure-relief cap: 120–150 kPa (17.4–21.7 psi). Removed radiator: 138 kPa (20 psi).
Open pressure specificationThese figures are for the checked 2010 Focus L4-2.0L manual selection. Verify your engine and original coolant before service.
Factory radiator and cooling-fan diagram
The exploded view labels the radiator, cooling fan and shroud, hoses, condenser, lower radiator support, and fasteners. The numbered callouts are catalog references, not retail part numbers.
Open the exploded view in the 2010 Focus manualRelated factory manual sections
These checked Focus L4-2.0L sections cover cooling-system service and testing. They are not a radiator removal and installation procedure.
Cooling System Draining, Filling and Bleeding
The manual requires a fully cooled engine before opening the pressurized system. It describes draining coolant with the vehicle on a hoist, removing the lower radiator air deflector, collecting coolant at the drain valve, then refilling and bleeding with a radiator refiller or the stated no-refiller procedure. It recommends 50/50 ethylene glycol and distilled water and warns not to mix coolant types.
Open this source manual leafCooling System Pressure Test
The factory warning says to let the engine cool before opening the system. The procedure uses a pressure test kit at the radiator fill neck and says not to exceed the maximum pressure in the specification table. It holds pressure for two minutes and directs inspection for leaks if pressure drops.
Open this source manual leafRadiator Leak Test, Removed From Vehicle
For the removed radiator, the manual warns not to leak-test an aluminum radiator in a tank used for copper/brass radiators. It says to clean the radiator first, then test it in clean water using pressurized air up to the pressure in the specifications.
Open this source manual leafParts and tools to verify before ordering
The manual names VC-7-B coolant and special radiator refiller 078-00592. Search listings are not confirmed fitment; verify your VIN and the coolant originally equipped.
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