Solest 120 Polyol Ester (POE) Compressor Oil -18.9L Can
Solest 120 by CPI is a fully synthetic polyol ester oil in viscosity grade ISO 120. It is made for chiller and commercial refrigeration compressors running on HFC refrigerants such as R134a, R410A and R407C. The 5-gallon (18.9L) can covers a full chiller oil change or keeps a service team stocked for top-ups.
Key Features
- Fully synthetic POE, which keeps its viscosity at high operating temperatures
- ISO VG 120, a common grade for screw and reciprocating compressors
- Works with R134a, R410A, R407C, R404A and other HFC refrigerants
- High thermal and chemical stability, with less sludge and acid formation
- Strong lubricity on the steel and aluminium surfaces inside the compressor
- More biodegradable than mineral and alkylbenzene oils
- 18.9L pack size that suits maintenance contractors and project work
Why the Right Oil Matters in a Chiller Compressor
HFC refrigerants don’t mix with mineral oil, so modern systems need a POE lubricant. The wrong oil, or the wrong viscosity, leads to poor oil return, bearing wear and high discharge temperatures. Often the result is a failed compressor and a costly replacement.
Built for Saudi Summers
Chillers serving malls, hospitals and towers in Riyadh, Jeddah and Dammam run for months at ambient temperatures above 45°C. A synthetic POE like Solest 120 holds its film strength under that sustained load far better than conventional oils.
Before You Charge the System
- POE absorbs moisture quickly. Open the can only when you’re ready to use it and reseal it tightly, especially in humid coastal cities
- Never mix it with mineral oil or a different viscosity grade
- Confirm the required oil on the compressor nameplate or in the OEM manual first
- Replace the filter drier whenever you change the oil
Applications
- Screw and reciprocating chiller compressors
- Commercial and industrial central air conditioning
- Cold rooms, freezer rooms and cold-storage warehouses
- Supermarket refrigeration systems
- Chiller maintenance contracts on large projects
Technical Specifications
| Specification | Details |
| Brand | Solest – CPI Fluid Engineering |
| Oil Type | Fully synthetic polyol ester (POE) |
| Viscosity Grade | ISO VG 120 (683 SUS) |
| Refrigerants | R134a, R410A, R407C, R404A and other HFCs |
| Compressor Type | Screw, reciprocating (others per OEM recommendation) |
| Pack Size | 18.9L (5 US gallons) |
| Use | Chillers, central AC, commercial and industrial refrigeration |
Why Buy from Cool.sa?
- Genuine oil in the original sealed can
- Chiller oil and parts specialists: Solest, York, Carrier, Trane, Hanbell, Bitzer
- 3 branches in Riyadh and Khamis Mushait, with same-day pickup
- Delivery to every city in Saudi Arabia
- Trade and volume pricing for maintenance companies and contractors
- Send us your compressor nameplate on WhatsApp and we’ll confirm the right oil
FAQs
Q1. What is Solest 120?
A fully synthetic POE refrigeration oil in viscosity grade 120, made for compressors running on HFC refrigerants.
Q2. Is it suitable for R410A and R134a?
Yes. It is designed for HFC refrigerants, including R134a, R410A, and R407C.
Q3. Can I mix it with mineral oil?
No. Don’t mix it with mineral oil or a different viscosity grade. Use the oil type and grade your compressor specifies.
Q4. How do I know my compressor needs Solest 120?
Check the compressor nameplate or OEM manual for a POE, ISO 120 requirement. If you’re not sure, send us a photo on WhatsApp.
Q5. Why must the can be resealed quickly?
POE absorbs moisture from the air, and moisture in the system forms acids that can damage the compressor.
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