Summary
Recochem HD Expert Extend WB coolant data, from Recochem's own source. HD Expert EXTEND WB Antifreeze/Coolant is a 50/50 premix OAT coolant listed by Recochem. The manufacturer's page we checked does not list OEM spec codes. Stated service life: up to 5 years or 250,000km.
What to buy
We have not verified an Amazon listing for this product. See the retailers the manufacturer names.
Where to buyConfirm the specification in your owner’s manual before buying. Product examples are not a fitment guarantee.
Specifications
| Brand | Recochem |
|---|---|
| Maker | Recochem |
| Product | HD Expert EXTEND WB Antifreeze/Coolant |
| Chemistry | OAT |
| Premix or concentrate | Premix 50/50 |
| Service life claim | up to 5 years or 250,000km |
| Free-of claims | nitrite-free, borate-free, silicate-free, phosphate-free, amine-free |
| Not published by the maker | Part numbers, Sizes, Base glycol, Colour, OEM / industry specs, ASTM standards, Freeze point, Datasheet. Check the product label or ask the manufacturer. |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
No OEM approval or spec codes are published on the source we checked. That does not mean the product fails any spec. It means the manufacturer did not list one there. Check the product label or ask the manufacturer.
What the manufacturer says it is for
It is suitable for light duty automotive as well as heavy duty applications where water based coolants are specified or used.
Quoted from the manufacturer's page. Coolant.com has not verified fitment for any vehicle, and a listed make or year range is the manufacturer's statement, not ours.
Compatibility notes
- Chemistry is listed as OAT. Mixing different chemistries can shorten coolant life. See OAT vs HOAT vs IAT and use the mixing checker before topping up.
- Sold premixed: pour as supplied. Do not add water unless the label says to.
Where to buy
We did not find a retailer link on the manufacturer's page that we could check. Try the manufacturer's own site: Recochem product page.
Related tool
Compare this coolant side by side
Open the comparison →Related products with the same listed chemistry
Related products with the same listed chemistry
- Prestone Heavy Duty Antifreeze + Coolant 50/50 Prediluted (Prestone, Premix 50/50)
- Prestone Command Nitrite Free Extended Life Antifreeze + Coolant (Prestone, Concentrate)
- Prestone Cor-Guard Command Nitrite Free Extended Life Antifreeze + Coolant (Prestone, not published)
- Prestone Prime DEX-COOL Compatible Orange Antifreeze + Coolant Check price (Prestone, not published)
- PEAK DEX-COOL 50/50 Prediluted Antifreeze + Coolant (PEAK, Premix 50/50)
- PEAK DEX-COOL Concentrate Antifreeze + Coolant Check price (PEAK, Concentrate)
More from Recochem
- DIGGERS OEM Premium Green Coolant
- HD EXPERT CLASSIC Antifreeze/Coolant
- HD Expert EXTEND Antifreeze/Coolant
- HD EXPERT EXTRA Antifreeze/Coolant
- HD Expert EXTREME Antifreeze/Coolant
- HD EXPERT PREMIUM Antifreeze/Coolant
See every Recochem product we list, with the chemistries and spec codes the maker names, on the Recochem coolant brand page.
See all Recochem coolants, coolants by brand or coolant by car make.
Browse the full coolant directory, or use Find my car coolant to match the spec in your owner's manual.
Next step
Not sure which coolant to buy? Match the spec code in your owner's manual, then buy the coolant that lists it.
Find my car coolantWhere to buy coolantHow we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.