Replace this with a real customer quote. Aim for 2–4 sentences with specific use case — what refrigerant, what compressor, why mineral was the right call.
Mineral Refrigeration Oil
4G VG68Mineral Refrigeration Oil · SUS 300 / ISO VG 68 · R-22 + R-134a + R-404a
Wax-FreeMade in USAISO VG 68R-22R-134aR-290R-600aOEM Spec
$20.06$64.85
Factory-DirectSave $44.79
In stock· ships same business day from Miami
Direct from the manufacturer — Miami HQ, full warranty & tech support included.
In stock, ready to ship
Assembled
Tested in Miami
Standard
OEM Spec
Ships
1–2 Days
- Field-tested by working HVAC technicians
- Free returns within 30 days
- Direct manufacturer support — Miami HQ
- ORDER IN THE NEXT — AND IT SHIPS TODAY FROM MIAMI
4G Mineral Refrigeration Oil SUS300 – ISO VG68 Lubricant
Sale price$20.06 USDRegular price
$64.85 USD
R-22/ R-290
Legacy + Hydrocarbon Compatible
For CFC, HCFC systems still in service AND modern A3 hydrocarbon refrigerants (R-290 propane, R-600a isobutane) — fully miscible, traditional choice
USAMADE
Manufactured in America
Refinery-grade mineral oil blended to OEM compressor lubricant specs — same plant, same QC every batch
ISOVG
Viscosity Grade
Available in ISO VG 32 (SUS 150) for general HVAC and ISO VG 68 (SUS 300) for higher-pressure refrigeration systems
WAXFREE
Floc-Resistant Formula
Engineered to prevent wax floc buildup in evaporators and expansion valves — critical for low-temp refrigeration
Why this oil
Built for the refrigerants
before A2L came in.
USA-manufactured mineral compressor lubricant for R-22, R-502, R-134a, and other legacy refrigerant systems that are still on every commercial refrigeration truck and residential service ticket. POE replaced mineral for HFC/A2L — but the equipment running mineral isn't retiring anytime soon.
Legacy refrigerant compatibility
For R-22, R-502, CFC, and HCFC systems still in service. ISO VG 32 (3G SUS 150) handles general HVAC and lower-pressure refrigeration; ISO VG 68 (4G SUS 300) for heavier-duty commercial refrigeration and certain R-134a applications. Mineral is the right chemistry — POE is NOT a drop-in for these systems without proper retrofit.
Wax-free, floc-resistant
Mineral oils with high wax content drop floc into the evaporator and expansion valve under low temperatures — the #1 cause of cold room and walk-in freezer trouble calls. This oil is refined wax-free with a low pour point (-40°F on the VG32) to keep the system flowing through every temperature swing.
USA-made, OEM-grade
Refinery-spec mineral oil manufactured in the United States to OEM compressor lubricant performance standards. Tested for chemical stability with refrigerants and compressor materials, thermal stability at high compressor discharge temps, and lubrication protection against wear. Non-hazardous, non-toxic.
Full Product Description
Mineral refrigeration oil ISO VG 68 for R-22, R-134a, R-404a, R-502, and R-290/R-600a hydrocarbon systems — heavier viscosity for heavy-duty commercial refrigeration, higher-pressure applications, and reciprocating compressors that demand more film strength. Premium refinery-grade mineral lubricant.
HCPRO Performance 4G is a refinery-grade mineral compressor lubricant with SUS 300 / ISO VG 68 viscosity (~68 cSt at 40°C). Flash point ~220°C / 430°F, pour point ~-22°F, wax-free formulation prevents floc in evaporators. Compatible with R-22, R-134a, R-404A, R-502, R-290 propane, R-600a isobutane, CFC, HCFC, and ammonia refrigerants. Works in reciprocating, rotary, and hermetic compressors used in residential, commercial, and industrial applications.
Who this oil is for
Heavy-duty commercial refrigeration techs. Walk-in cooler and freezer service techs servicing larger units. Industrial refrigeration contractors. Appliance repair techs working on R-600a household refrigerators that spec heavier viscosity. Anyone servicing higher-pressure R-22 or R-404a commercial equipment.
When to use it
During compressor refill on R-22, R-134a, R-404a, R-502, or hydrocarbon systems specifying ISO VG 68. Use during routine service at OEM-specified intervals. Critical for high-pressure or heavy-duty applications where lighter-viscosity VG 32 won't maintain film strength under load.
Why mineral 4G vs 3G, PAG, or POE
4G VG 68 for heavy-duty commercial and high-pressure mineral-oil systems. 3G VG 32 for general HVAC and lower-temp refrigeration. POE for modern HFC/A2L (R-410A, R-32) — mineral is NOT compatible with HFC refrigerants beyond R-134a. PAG for R-134a automotive only. Hydrocarbons (R-290, R-600a) are chemically similar to mineral oil for full miscibility.
Available in quart and gallon sizes. Refinery-grade, 3–5 year shelf life sealed. Carries Prop 65 warning for petroleum-based components. Manufactured in the USA to OEM compressor lubricant performance standards.
Technical specifications
What the refinery measures, what the compressor needs.
Manufactured in the USA to OEM compressor lubricant performance standards. Refinery-grade mineral oil — chemically stable with CFC and HCFC refrigerants, thermally stable at compressor discharge temps, wax-free for evaporator and expansion valve protection.
Type
Mineral compressor lubricant (refinery-grade)Non-synthetic — for legacy refrigerant systems
Manufactured in
United States of AmericaOEM-grade compressor lubricant standards — no imported chemistry
ISO viscosity grade
ISO VG 32 (3G SUS 150) or ISO VG 68 (4G SUS 300)VG 32 for general HVAC · VG 68 for heavy-duty refrigeration
Viscosity at 40°C
~30 cSt (VG 32) · ~68 cSt (VG 68)Service temperature standard reference
Flash point
~430°F / 220°C (typical)High thermal stability for compressor discharge temps
Pour point
-40°F (VG 32) · -22°F (VG 68)Cold-weather flow without crystallization
Refrigerant compatibility
R-22, R-502, R-290, R-600a, CFC, HCFC, Ammonia (VG 32) · R-22, R-134a, R-404a, R-502, R-290, R-600a (VG 68)Hydrocarbons (R-290 propane, R-600a isobutane) are chemically similar to mineral oil — full miscibility
Compressor types
Reciprocating, rotary, hermeticCommercial refrigeration, residential HVAC, cold rooms
NOT compatible with
R-410A, R-32, R-454B, R-1234yf (A2L/HFO)Modern HFC and A2L systems require POE — use our RPO-32 / RPO-68 instead
Wax content
Wax-freePrevents floc problems in evaporator and expansion valve
Moisture content
Low — store sealedMineral oils tolerate moisture better than POE, but keep cap on
Color
Clear to light amberBright and clear — no contamination visible on pour
Shelf life
3–5 years (sealed)Unopened bottles — once opened, use within service interval
Hazmat / safety
Non-hazardous, non-toxicVG 68 carries Prop 65 warning for petroleum-based components
Container sizes
Quart, gallon, multi-pack optionsSelect size at checkout via variant picker
In the box
Pour, run, done. Mineral oil tolerates moisture better than POE — but keep the cap tight.
Mineral Refrigeration Oil bottleQuart or gallon — viscosity grade printed on label (3G ISO VG 32 / SUS 150 or 4G ISO VG 68 / SUS 300)
Application + safety insertRefrigerant compatibility chart, OEM-spec injection guide, and chemical safety information
Customer reviews
What working techs say after putting it on the job.
12,000+
HVAC pros served
4.9★
Average rating
94%
Repeat buyers
Replace this with a real customer quote. Aim for 2–4 sentences with specific use case — what refrigerant, what compressor, why mineral was the right call.
Replace this with a real customer quote. Aim for 2–4 sentences with specific use case — what refrigerant, what compressor, why mineral was the right call.
Tools that pair with the 4G VG68.
02-0040
3G Mineral Refrigeration Oil SUS150 - ISO VG32 HVAC Lubricant
$24.00
02-0053
RPO-32 Synthetic POE Refrigeration Oil — R-410A, R-32, R-134a, R-1234yf & A2L
$23.76
02-0025
HVAC Flash Flush Solvent — Removes Acid After Compressor Burnout (32oz)
$13.64
02-0076-2
HCLSK2 2oz HVAC Leak Sealant with 45° Swivel Adapter
$28.56
22-0080
HC-2V2Y3P Manifold Gauge Set R32, R290, R600 w/ 3ft Hoses
$50.55
$71.85
Common questions
Answers from the warehouse floor.
Still stuck? Call our techs at 305-720-0044.
Does HCPRO warranty the products?
Yes — every HCPRO product ships with a 1-year limited warranty against manufacturing defects. We'll replace the bottle if it fails to meet stated specs under normal use. See our full warranty terms.
Mineral vs PAG vs POE — which do I need?
Mineral is for R-22, R-502, and other CFC/HCFC refrigerants — the systems built before HFC. PAG is for R-134a automotive A/C only. POE is for modern HVAC and refrigeration running R-410A, R-32, R-454B, R-1234yf, R-404A, R-407C. If your compressor manual specs mineral oil, use mineral. Mixing chemistries causes premature compressor failure.
Which viscosity grade — 3G (VG 32) or 4G (VG 68)?
3G ISO VG 32 / SUS 150 — general HVAC, residential R-22 service, lower-pressure refrigeration scroll compressors, low-temp applications where pour point matters. 4G ISO VG 68 / SUS 300 — heavy-duty commercial refrigeration, higher-pressure systems, reciprocating compressors that need more film strength, certain R-134a service applications. Match your compressor's OEM viscosity spec.
Will mineral oil work with R-410A or A2L refrigerants?
No. Mineral oil is NOT compatible with HFC refrigerants (R-410A, R-134a in modern systems) or A2L blends (R-32, R-454B, R-1234yf). It doesn't return to the compressor with these refrigerants and causes burnout. For modern systems use our RPO-32 or RPO-68 Synthetic POE instead.
Is mineral oil right for R-290 (propane) and R-600a (isobutane) hydrocarbon systems?
Yes — and it's traditionally the standard choice. Hydrocarbon refrigerants (R-290 propane, R-600a isobutane) are chemically similar to mineral oil because both are petroleum-based hydrocarbons. Full miscibility means the oil returns to the compressor reliably without pooling in the line set. R-600a is the standard in domestic refrigerators and freezers; R-290 is used in small commercial refrigeration, vending machines, beverage coolers, and standalone display cases. Newer A2L-aware compressors sometimes spec POE — check the OEM. For most hydrocarbon service work, mineral oil is the right answer.
Can I use mineral oil during an R-22 → R-410A retrofit?
No — once you're moving to R-410A, the system needs POE oil. Mineral and POE are miscible during the transition (which is why POE is the right retrofit choice), but the final fill should be POE only. Use mineral oil to service the existing R-22 equipment; use POE for the retrofit.
Why is wax-free formulation important?
Standard mineral oils contain paraffin wax that drops out under low evaporator temperatures, clogging the metering device and starving the evaporator. This causes the system to short-cycle, freeze the line, or run rough. Our mineral oil is refined wax-free — critical for cold rooms, walk-in freezers, and any low-temp refrigeration application.
How long does an unopened bottle last?
Shelf life is 3–5 years sealed. Mineral oils tolerate moisture far better than POE oils, but keep the cap tight in a cool, dry place. Once opened, use within the service interval — don't leave half-bottles sitting on the shelf for months.
Will using HCPRO products void my OEM warranty?
No. Under the Magnuson-Moss Warranty Act of 1975, an OEM cannot void your factory warranty for using compatible aftermarket fluids. Our mineral oils are spec'd to meet OEM compressor lubricant performance standards. If a dealer pushes back, contact us and we'll send the documentation.
Can I return an unused bottle?
Yes — free returns within 30 days for unopened bottles in original packaging. Opened bottles can't be returned for resale (chemical product). Read our full return policy.
Do you offer bulk pricing for shops?
Yes — for orders larger than what's available in the variant picker, email hcproproductsusa@gmail.com with your business details and we'll send a custom bulk quote within 24 hours.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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