CarPlan Blue Star Antifreeze & Coolant Concentrate 5L

CarPlan Blue Star is a 5-litre mono-ethylene glycol-based antifreeze and coolant concentrate, listed as suitable for classic and vintage vehicles. Its corrosion inhibitors are claimed to remain in the system for up to two years, and it conforms to BS6580 (2010).

At a glance

Concentrate format lets the buyer prepare coolant rather than selecting a ready-mixed product.
Corrosion inhibitors are claimed to provide protection for up to two years.
The listing describes it as suitable for classic and vintage vehicles.
Contains Bitrex, which the listing says helps prevent ingestion.

Price

£14.39Save 37%

Reference price: ~~£22.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

The classic and vintage vehicle suitability is explicitly stated, matching buyers maintaining older cars.
The listing identifies the mono-ethylene glycol base and cites BS6580 (2010), useful details to compare with vehicle requirements.
Corrosion inhibitors and the stated maximum two-year period provide a defined maintenance reference.

Technical specifications

7 specifications

Identity
Brand	CarPlan
Model	BSA005

Dimensions and weight
Dimensions listed	18.5 x 13 x 28.5 cm; 4.75 kg
Weight listed	4.75 kg

Formula and claims
Base	mono-ethylene glycol
Standard conformity	BS6580 (2010)
Maximum inhibitor service period	up to a maximum of 2 years

What to know before buying

This is a concentrate. Confirm the correct dilution and compatibility for the vehicle before use. The stated two-year maximum is a listing claim, not a substitute for the vehicle maker’s service guidance.

Who is it for?

A good fit for

Owners of classic or vintage vehicles seeking a coolant concentrate, after confirming compatibility with their cooling system.
Drivers who prefer a concentrate and can follow vehicle-specific dilution guidance.

Less suited to

Buyers who need a ready-to-use premixed coolant.
Anyone whose vehicle requires a specification or coolant type not confirmed by the supplied listing.

CarPlan Blue Star Antifreeze & Coolant Concentrate 5L · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 223 ratings

5 stars82%82%
4 stars11%11%
3 stars4%4%
2 stars1%1%
1 star2%2%

Customer feedback highlights perceived effectiveness and suitability for older vehicles, particularly classic cars. These comments align with the product’s listed classic-car suitability and antifreeze purpose, but do not establish compatibility with every older cooling system. The aggregate ratings are mostly five-star, while a smaller share is lower, so experiences are not uniformly positive.

Positive themes

Customers describe it as effective.
Customers mention suitability for older vehicles and classic cars.
Feedback mentions its antifreeze function.

Frequently asked questions

Is this coolant ready mixed?

No. The listing identifies it as a concentrate. Check the vehicle’s instructions for the required dilution.

Is it listed for classic cars?

Yes. The listing says it is suitable for classic and vintage vehicles, but buyers should still confirm that its chemistry meets their vehicle’s requirements.

How long can it remain in the cooling system?

The listing says its corrosion inhibitors can remain in the system for up to a maximum of two years. Follow the vehicle maker’s maintenance guidance.

Does it contain an ingestion deterrent?

The listing says it contains Bitrex to help prevent ingestion. This does not make the product safe to ingest.