Motor oils made in South Korea

Korean quality — in every pack of KORTEX

Find the right oil for your vehicle, verify authenticity and buy from official sales points.

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KORTEX RT7 PLUS 5W-30 API SQ / ILSAC GF-7A — 4 L, side view

SAE5W-30APISQILSACGF-7A

From plant to engine

The journey behind every litre

01
Made in Korea
Produced at a partner plant in South Korea to the Korean standard.
02
Laboratory control
Viscosity, flash point and pour point are checked against specification.
03
Genuine seal
A sealed cap today, and soon a unique verification code on every container.
04
Your engine
Oil matched to your vehicle, climate and fuel.

In numbers

18

products in the catalog

4

product families

−39°C

lowest pour point, engine oils

161

highest viscosity index

Product lines

A line for every engine

KORTEX RT7 5W-30 API SP / ACEA A3-B4 — 4 L pack

RT7

Synthetic oils for passenger cars, 0W-20 to 20W-50

Grades: 5W-30 · 5W-40 · 0W-20 · 15W-40 · 20W-50

KORTEX LPG 10W-40 API SP / ACEA A3-B4 — 4 L pack

LPG

For LPG-fuelled engines

Grades: 10W-40

KORTEX CNG 15W-40 API CI-4 — 20 L pack

HD

Trucks, buses and heavy machinery

Grades: 15W-40 · 20W-50

KORTEX ULTRA Hydraulic Oil AW 32/46/68/100 — 20 L pack

ULTRA

Hydraulic systems, ISO VG 32–100

Grades: VG 32 · VG 46 · VG 68 · VG 100

KORTEX DEXRON III ATF — 4 L pack

ATF

For automatic transmissions

Grades: Dexron III H · Dexron VI

KORTEX Gear Oil 75W-85 API GL-4 — 4 L pack

GEAR

Manual gearboxes and axles

Grades: 75W-85 · 80W-90

Viscosity lab

Learn to read an SAE grade

The first number (W for winter) is about cold starts; the second is the thickness at a 100 °C operating temperature. Pick a grade.

Cold start · 5W

Operating temperature · 30

Viscosity at 100 °C: 11.5 cSt
Pour point: −39 °C

RT7 5W-30 API SP / ACEA A3-B4 — Values are typical properties from the KORTEX catalog.

Oil finder

The right oil for your vehicle

Choose make, model and engine — we show the matching KORTEX oil, capacity and change interval.

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Verify authenticity

Verify authenticity

Enter the 12-character code under the cap or scan the QR code.

Verification page →

For partners

We work with dealers and workshops

Shipments direct from Korea
Passenger and heavy-duty oils, transmission and hydraulics in one place
A branch in Andijan and a direct line to our manager

Become a dealer Call us

LPG 10W-40 cases on a pallet

Products

Passenger car oils

Synthetic and semi-synthetic oils for gasoline, gas-fuelled and hybrid engines.

Heavy-duty oils

For diesel engines in trucks, buses and machinery.

Transmission & ATF

For manual gearboxes, axles and automatic transmissions.

Hydraulic oils

ISO VG 32 / 46 / 68 / 100 — for excavators, loaders and industrial equipment.

News

Nov 9, 2026 DEMO

KORTEX launches its new website

Product catalog, sales points and, soon, oil finder and authenticity check.

Oct 28, 2026 DEMO

A new shipment has arrived from Korea

Passenger car and heavy-duty oils are now in stock.

Oct 10, 2026 DEMO

Oil for gas-fuelled cars: what to look for

How CNG and LPG affect the engine and when to change the oil.

The KORTEX promise

Drive

Premium Korean oil — from official sales points