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Explore refrigeration lubricant knowledge, compressor oil selection tips, system application insights, and HVACR industry updates from the QISHANR team.

October 20th, 2026

Mineral Refrigeration Oil in R22 Chiller Compressor Maintenance

October 19th, 2026

Top 5 Mineral Refrigeration Oils with Broad OEM Cross-References

October 16th, 2026

Which Solest Grade? LT-32, 68 and 170 Compared

October 16th, 2026

What Does ISO VG 100 Do in an R717 Screw Compressor?

October 16th, 2026

Daphne FVC68D vs FVC32D: Which PVE Grade Fits Your Compressor?

October 15th, 2026

Why Wax-Free Naphthenic Base Oil Matters in Ammonia Refrigeration

October 15th, 2026

Refrigeration Oil Behavior in R717 Ammonia Cold Storage Systems

October 15th, 2026

Naphthenic Refrigeration Oil for High-Load Screw Compressor Repairs

October 10th, 2026

Selecting RL170H 170 cSt POE Oil for R134a Screw Compressors

October 10th, 2026

RL170H 170 cSt POE Refrigeration Oil Viscosity Between ISO VG 150 and 220

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