Recochem HD Expert Classic: specs and approvals

Updated 22 October 2026 · Independent, sourced reference

Summary

Recochem HD Expert Classic coolant data, from Recochem's own source. HD EXPERT CLASSIC Antifreeze/Coolant is a concentrate and 50/50 premix coolant listed by Recochem. The manufacturer lists 4 OEM or industry spec codes, including GM 1825M.

Disclaimer: General information only, not professional advice. Always use the coolant specified in your vehicle owner's manual. Using the wrong coolant can damage an engine.
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Specifications

BrandRecochem
MakerRecochem
ProductHD EXPERT CLASSIC Antifreeze/Coolant
Part numbers (as published)86-284, 86-474, 16-284, 16-474, 16-285, 16-475, 26-289, 26-479
Sizes (as published)1 Gallon, 3.78 L, 9.46 L, 208 L, 55 gal, 1000 L
Chemistrynot published
Base glycolnot published
Colournot published
Premix or concentrateConcentrate and Premix 50/50
OEM / industry specs listedGM 1825M, Detroit Diesel 7SE298, Navistar CEMS B-1, TMC RP-329B
ASTM standards listednot published
Service life claimnot published
Freeze point (as published)not published
Free-of claimsphosphate-free, amine-free
Datasheetnot published
Sourcemanufacturer page
Last checked22 October 2026

Specs and approvals listed by the manufacturer

  • Meets GM 1825M per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (GM)
  • Meets Detroit Diesel 7SE298 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Detroit Diesel)
  • Meets Navistar CEMS B-1 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Navistar)
  • Meets TMC RP-329B per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (TMC (heavy-duty truck))

Manufacturer wording: CLASSIC Conventional Diesel – recommended for use where a fully formulated heavy duty diesel coolant is required

"Meets X per manufacturer" is our shorthand for any of the manufacturer's own phrases: meets, meets or exceeds, approved, or recommended for applications requiring. It is the manufacturer's claim, not an approval by Coolant.com or by the vehicle maker. Codes are copied as published. Some sources list codes for compatibility rather than formal approval. The wording above shows which.

Compatibility notes

  • If your owner's manual calls for GM 1825M, Recochem lists that code for this product. Read the exact wording above, and confirm against your manual.
  • Sold premixed: pour as supplied. Do not add water unless the label says to.
Always check your owner's manual first. Use the coolant spec printed in your owner's manual or service information. A listing here is the manufacturer's own claim (meets, exceeds, approved or recommended, worded as they put it). It is not our approval and not a fitment guarantee for your vehicle. If in doubt, ask your dealer or a qualified mechanic.

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.

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Sources

  1. Recochem product page (status on 22 Oct 2026: 200)