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FAQs

Because a leak that only appears when hot will not show with the engine cold and the cap off. Pressure testing recreates the working pressure while the system is cold and static.

That depends on adaptor coverage, since cap and filler neck designs vary widely. A 5 piece kit covers common fittings; 22 and 32 piece kits cover a workshop taking whatever arrives.

Yes. Ethylene and propylene glycol read differently, so a tester calibrated for one gives a wrong figure on the other. Both types are held as separate testers.

A reading taken by light rather than by float, which does not depend on temperature the way a hydrometer does. It also reads battery and screenwash on the same instrument.

With a vacuum purge and refill kit, which draws the system to a vacuum and then lets coolant in, so no air is left in the block or the heater matrix.

With a combustion gas leak detector, which tests the coolant for exhaust gas. That confirms a gasket fault rather than inferring it from symptoms.

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Pressure Test & Refill Kits

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This category covers tools for testing and servicing vehicle cooling systems. The range includes multi-piece cooling system pressure test kits, vehicle-specific pressure test caps and cap sets, including commercial vehicle and bus applications, pump and gauge assemblies, cap testing kits and combustion leak testers for checking for combustion gas in the coolant. Refractometers and disc type antifreeze testers are also listed for checking coolant, along with radiator fin straighteners.

Brands include Sealey, Sykes Pickavant, Draper and Govoni. When choosing a pressure test kit, check that the included adaptors or caps match the header tank or radiator necks on the vehicles you service; individual caps can be added for specific applications. For coolant checks, confirm whether the tester is suited to ethylene or propylene glycol antifreeze.

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FAQs

Because a leak that only appears when hot will not show with the engine cold and the cap off. Pressure testing recreates the working pressure while the system is cold and static.

That depends on adaptor coverage, since cap and filler neck designs vary widely. A 5 piece kit covers common fittings; 22 and 32 piece kits cover a workshop taking whatever arrives.

Yes. Ethylene and propylene glycol read differently, so a tester calibrated for one gives a wrong figure on the other. Both types are held as separate testers.

A reading taken by light rather than by float, which does not depend on temperature the way a hydrometer does. It also reads battery and screenwash on the same instrument.

With a vacuum purge and refill kit, which draws the system to a vacuum and then lets coolant in, so no air is left in the block or the heater matrix.

With a combustion gas leak detector, which tests the coolant for exhaust gas. That confirms a gasket fault rather than inferring it from symptoms.

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