Hubert Glass Oil Synthetic 5W-20 Motor Oil, 4 x 5-Quart Case #G520S-5Q
| Part Number | G520S-5Q |
| Product | Glass Full Synthetic Motor Oil |
| SAE Grade | 5W-20 |
| Oil Type | Full synthetic motor oil |
| Service Rating | API SP / ILSAC GF-6 |
| Viscosity @ 40 °C | 46.08 cSt |
| Viscosity @ 100 °C | 8.38 cSt |
| Viscosity Index | 159 |
| Flash Point | >200 °C (COC) |
| Pour Point | -42 °C |
| Cold Crank (CCS) | 3,909 cP @ -30 °C |
| Package | 4 x 5-Quart Jugs |
| Total Case Volume | 20 Quarts (5 Gallons) |
| Approx. Weight | 40 lb |
Hubert Glass Oil Synthetic 5W-20 Motor Oil, 4 x 5-Quart Case #G520S-5Q
The Hubert Glass Oil #G520S-5Q is Glass Full Synthetic 5W-20 motor oil in a 4 x 5-quart case — 20 quarts (5 gallons) of API SP / ILSAC GF-6 synthetic for gasoline engines whose owner's manual calls for SAE 5W-20. Hubert Glass Oil Co. blends it in Jacksonville, Texas, as part of their top-tier Glass Full Synthetic line.
On the data sheet's own numbers for 5W-20: 46.08 cSt at 40 °C and 8.38 cSt at 100 °C, a 159 viscosity index, a flash point above 200 °C (COC), a pour point of -42 °C and a cold-crank of 3,909 cP at -30 °C. The sheet's performance chart carries the line's headline claims for this grade: wear protection 50% better than GF-6 limits, deposit control 14% above GF-6 standards, and fuel economy exceeding GF-6 limits by 18%.
Handling & Disposal — Per the SDS
- Not regulated as a hazardous material under 49 CFR (DOT) — also not regulated for IMDG or IATA
- NFPA Health 0 / Flammability 1 / Reactivity 0 (HMIS 1/1/0)
- Harmful to aquatic life — avoid release to the environment
- Containers are not designed to hold pressure — never pressurize, cut, weld or heat them
- Bonding and grounding may be needed during handling (static)
- Used oil goes to a collection service, not the trash
Performance vs. the GF-6 Limits — Per the Data Sheet
- Wear protection: 50% better than GF-6 limits
- Deposit control: 14% above GF-6 standards
- Fuel economy: exceeds GF-6 limits by 18%
Questions Shops Ask
Which grade does my vehicle or fleet need?
The oil cap and owner's manual are the authority. This case is 5W-20 — for engines specified for it. If your cap calls for 0W-20, 5W-30 or 10W-30, we stock those grades of the same line (G020S-5Q, G530S-5Q, G1030S-5Q). Never substitute grades unless the engine documentation allows it.
Is this oil licensed to API SP / ILSAC GF-6?
Per the manufacturer's data sheet, the Glass Full Synthetic line is rated API SP / ILSAC GF-6 across all four grades (0W-20, 5W-20, 5W-30, 10W-30). The sheet lists no OEM-specific approvals — no dexos, Ford or Chrysler specs — so if your engine requires a specific OEM approval, check that requirement before ordering.
5W-20 versus 0W-20 — which one?
Both are light grades; the data sheet separates them: 5W-20 runs 46.08 cSt at 40 °C against 0W-20's 44.26, with a 159 viscosity index against 0W-20's 176. Engines designed for 0W-20 rely on its superior cold-flow; engines specified for 5W-20 are built around its viscosity. Follow the cap — do not swap.
Is there a minimum order?
Yes — there is a minimum for Glass Oil orders, stated in the highlighted notice on this page. If the Glass Oil items in your cart fall short at checkout, we cannot fulfill the order; we will contact you and refund you in full. Questions about combining Glass Oil items to reach it? Call (817) 865-3707.
How should I handle and store it?
Per the SDS (9719 Rev 4, dated 2025-12-30): it is not regulated as a hazardous material for transport, carries NFPA ratings of Health 0 / Flammability 1 / Reactivity 0, and is harmful to aquatic life — avoid release to the environment. The jugs are not pressure containers: never pressurize, cut, weld or heat them, and watch for static during handling. Route used oil to a collection service.
Why Buy from Alamo
- We stock the grades your fleet actually calls for. All four Glass Full Synthetic grades, by the 20-quart case.
- Case quantities, one order. Four 5-quart jugs per case — enough for a small fleet service without stacking singles.
- Questions on grade or OEM specs? Call (817) 865-3707 before the order ships — we confirm it.
Fitment & Handling
Confirm the SAE grade your engine specifies before filling — the oil cap and owner's manual are the authority, and the data sheet's own guidance is to confirm the product against the OEM recommendation for the equipment's operating conditions. This line carries API SP / ILSAC GF-6; the data sheet claims no OEM-specific approvals. Do not substitute grades unless the engine documentation allows it. For the light grade your engine specifies, this is the 5W-20 case of the Glass Full Synthetic line.
Questions on grade, OEM specs or quantities? Call Alamo Equipment at (817) 865-3707.
$350 minimum for Glass Oil orders. Glass Oil orders must total at least $350 for us to fulfill them. If you check out with less, we cannot fulfill the order. We will contact you and refund your money in full.
Part numbers: G520S-5Q, G520S5Q
Shipping follows the method shown on the product page and at checkout. Standard parcel, calculated LTL, freight quotes, included freight, and pickup may apply by item.
UPS shipping cutoff: order before 11:30 AM ET and your order ships the same business day; later orders ship the next business day. Delivery options and estimated arrival dates for your address are shown at checkout.