Nu-Calgon Mineral Refrigeration Oil 300 C-3S 1 Gal HVAC Compressor Oil

SKU: 4303-07

Weight	9 lbs
Dimensions	12 × 10 × 7 in
Condition	New
Manufacturer Part Number	4303-07
Brand	Nu-Calgon

$71.66

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$71.66	0%
5–9	$68.08	5%
10+	$64.49	10%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Quantity needed

Enter the total quantity you need. We will confirm availability and a quote before you order.

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

Nu-Calgon Mineral Refrigeration Oil 300 C-3S 1 Gal HVAC Compressor Oil

Specifications & product details

Nu-Calgon Mineral Refrigeration Oil 300 – C-3S Grade – 1 Gallon

Nu-Calgon Refrig Oil 300 (C-3S) is a high-quality mineral naphthenic compressor oil specifically formulated for today’s high-performance air conditioning and refrigeration compressors. Modern HVAC/R systems operate at higher speeds and temperatures, making proper lubrication critical to long-term efficiency and reliability.

This oil provides excellent lubricity, thermal stability, and compressor protection, helping ensure smooth operation and reduced wear. Ideal for use in systems utilizing CFC and HCFC refrigerants, including R-22 applications.

Key Features:

1 Gallon jug
Mineral refrigeration oil – Grade 300 / C-3S
Designed for high-temperature compressor operation
Ensures efficient lubrication and long compressor life
OEM-quality HVAC/R lubricant

Brand: Nu-Calgon
MFG#: 4303-07
Condition: Brand New

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.