Symptoms to investigate
Unexplained coolant loss, combustion gases in coolant or white exhaust smoke can be consistent with an internal leak, but can have other causes.
HYPERSEAL CLEAR • HEAD GASKET REPAIR
Looking for a Steel Seal alternative?
Compare head gasket repair treatments and discover HyperSeal Clear: a 500ml liquid treatment designed for suitable internal cooling-system leaks.
500ml HyperSeal bottleSimple pour-in treatmentUK online ordering
HyperSeal from £34.99
CLEAR FACTS. INFORMED CHOICE.
HyperSeal Clear vs Steel Seal
Two brands to consider when researching a liquid head gasket treatment. Compare the details that matter before you buy.
| What to compare | HyperSeal Clear | Steel Seal |
|---|---|---|
| Advertised single-bottle price | £34.99 | £44.99 |
| Product approach | Liquid treatment for suitable head gasket and internal cooling-system leaks | Liquid head gasket repair treatment |
| Instructions | Use the approved HyperSeal instructions; check coolant suitability before treatment | Follow Steel Seal's published instructions |
| Guarantee | See our published returns policy and statutory rights | Steel Seal advertises a qualifying refund and lifetime replacement scheme |
| Where to buy | Shop HyperSeal ↗ | View Steel Seal ↗ |
Prices checked on 23 October 2026; competitor prices may change. Pricing shown is for advertised single-bottle products and may exclude delivery. Product quantities, formulations, delivery charges and treatment instructions may differ. Compare the full cost of the dosage required for your vehicle. Steel Seal is an independent third-party brand; HyperSeal Clear is not affiliated with or endorsed by Steel Seal.
WHY CONSIDER HYPERSEAL?
Head gasket trouble? Explore a more affordable treatment option.
For a suitable internal cooling-system leak, HyperSeal Clear may offer a straightforward first treatment before committing to expensive engine dismantling. The result depends on the cause and severity of the fault.
View HyperSeal Clear01Compare pricing before purchasing
02Review clear application information
03Shop directly from the HyperSeal website
KNOW BEFORE YOU TREAT
Is a liquid head gasket treatment suitable?
Check your coolant
Not every antifreeze formulation is necessarily suitable during treatment. Drain or prepare the system only as directed by the approved HyperSeal instructions. Flushing isn't automatically required for every vehicle.
Follow dosage instructions
Use the confirmed HyperSeal dosage for your engine. Different engines can need different quantities; do not assume one bottle treats every vehicle.
Safety: Never open a hot or pressurised cooling system, and never continue running an overheating engine. Severe faults or mechanical damage may need professional repair.
QUESTIONS BEFORE YOU BUY
Frequently asked questions
Is HyperSeal Clear an alternative to Steel Seal?
HyperSeal Clear is a separate brand of liquid head gasket repair treatment. It is worth considering if you're comparing products for a suitable internal cooling-system leak. We do not claim the brands are affiliated or that their performance is identical.
Does HyperSeal Clear work on every blown head gasket?
No chemical treatment can guarantee a repair to every failure. Effectiveness depends on the location and severity of the leak, engine condition and correct application.
Must I flush the cooling system first?
Not always. Flushing may be recommended for contaminated systems, while an unsuitable coolant may need to be drained and replaced with the specified treatment fluid. Consult the approved instructions before use.
How many bottles do I need?
HyperSeal Clear is sold in 500ml bottles. Check the approved dosing instructions for your engine before ordering. Do not infer the dose from another brand's instructions.
Why is Steel Seal mentioned on this page?
We provide a factual shopping comparison for customers researching head gasket repair options. Steel Seal is a trademark of its respective owner; HyperSeal Clear is independent.
READY TO EXPLORE YOUR OPTIONS?
Discover HyperSeal Clear
See the product details, read the application information and check suitability before ordering.
Explore HyperSeal Clear