Liquid Copper Block Seal Intake & Radiator Stop Leak

What it's for:
  • Block & Head Gasket
What it does:
  • Stops Leaks
  • Repairs
  • One Step, No Draining Required
  • Antifreeze Compatible Sodium Silicate Formula
  • Permanent Cooling System Repair
  • Works with All Types of Antifreeze or Water
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It’s part of life: older cars, trucks, and vans can develop large leaks in their radiators and intake manifolds. If you’ve tried regular stop leak products you know they are not powerful enough to stop these larger leaks. That’s why Rislone designed the Liquid Copper Block Seal Intake & Radiator Stop Leak. This one-step sealer was designed to quickly and safely stop these overwhelming leaks.

What’s it do? Our formula permanently repairs larger leaks in radiators, intake manifolds and gaskets, heater cores, blocks, heads and freeze plugs. It contains an antifreeze-compatible sodium silicate liquid glass formula, so no draining of the cooling system is required. Not to mention, it will not harm the cooling system when used properly.

Their stop leak products can’t get your show back on the road like Rislone — that’s why we’ve been the most trusted brand since 1921.

Part Number: 31109
Dosage: Use – 1/2 bottle in a small cooling systems, such as 4 cylinders with no A/C. Use 1 bottle for regular size systems, which are most 4, 6, 8 and 10 cylinder engines.
Size: 510 g

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