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Transmission Oils

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Optimal ATF IIID

Multigrade semisynthetic fluid ATF IIID provides efficient and reliable operation of automatic transmission and steering systems for commercial,...

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Optimal ATF IID

Optimal ATF IID is a universal multigrade transmission fluid intended for automatic transmissions and power steering of passenger cars...

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Optimal ТМ 5-18 Super

Multigrade semisynthetic transmission oil of the highest class. The oil is intended for lubrication of transmissions of cars and trucks, including...

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OPTIMAL ТМ-5-18

Transmission oil OPTIMAL TM 5-18 is intended for lubrication of transmissions of cars and trucks, including hypoid gears, as well as transfer cases and...

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Optimal ТМ-4-12

Transmission oil of high class for manual gearboxes, which is used year-round for the lubrication of transmissions of front-wheel drive cars and manual...

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Optimal 85W140

MULTIGRADE TRANSMISSION OIL OPTIMAL 85W140 FOR HEAVY-LOADED VEHICLES.

OPTIMAL 85W140 is a transmission multigrade oil for lubricating of...

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Optimal ТАD-17I

Multigrade universal mineral transmission oil. Reliably protects friction surfaces from corrosion, wear, scoring and other damages.

It...

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Optimal ТАP-15V

Multigrade mineral transmission oil. Provides good protection for friction surfaces against corrosion, wear, scoring and other damages.

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Nigrol

Nigrol is a mineral transmission oil for summer use.


It is used in summer for lubrication of all types of transmissions, aggregates of...

The “Naftoproduct” company offers a wide range of OPTIMAL transmission oils for manual, automatic, and automated gearboxes, reducers, and axles.
Available packaging from 1 to 200 liters, delivery across Ukraine, wholesale prices for regular customers.
We will select the right oil for your car or machinery according to the manufacturer’s recommendations and provide quality certificates.

Why It’s Important to Choose the Right Transmission Oil

Purchasing transmission oil means taking care of your gearbox. Since there are 4 types of gearboxes, oils and fluids also differ. Choosing the right oil is the guarantee of long-lasting and trouble-free transmission operation. Lubricants for gearboxes are used according to specific schedules. It is also worth noting that transmission oils are used for friction units, transmissions, reducers, and axles. The correct choice determines the service life and reliable performance of the equipment.

Purpose of Transmission Oil

Wear of gearbox parts can cause serious issues in a vehicle’s operation. Transmission oil coats the gearbox with a protective oily film, shielding it from mechanical and thermal loads.

Main functions of transmission oil:

  • reduce friction and wear of gears and bearings;

  • protect against corrosion and oxidation;

  • dissipate heat and prevent overheating;

  • maintain viscosity across a wide temperature range.

Depending on the type of gearbox (automated, CVT, automatic, manual), oil change intervals range from 20,000 to 300,000 kilometers. Oil density should remain stable despite temperature fluctuations, and viscosity determines its lubricating performance.

Types of Transmission Oils

Transmission oils are classified by composition:

  • Semi-synthetic — a blend of synthetic and mineral bases with additives.

  • Synthetic — produced through synthesis, compatible with various additive packages, and highly thermally stable.

  • Mineral — derived from petroleum, used in less loaded units or older machinery.

SAE Classification
The SAE classification defines the seasonal suitability of oil: winter, summer, or all-season. All-season oils are most popular, providing consistent protection in both cold and hot weather.

API GL Classification
The API GL rating (GL-4, GL-5, etc.) indicates wear protection levels and permissible loads. For example, GL-4 is used for standard gearboxes, while GL-5 is for high-load hypoid gears.

Differences in Oils for Various Gearbox Types

  • MT (Manual Transmission) — oils with high load-carrying capacity (typically API GL-4 or GL-5) to protect gear teeth.

  • AT (Automatic Transmission) — special ATF fluids with optimal flow and friction properties.

  • CVT (Continuously Variable Transmission) — specific CVT fluids ensuring proper belt or chain grip on pulleys.

  • Automated Manual Gearboxes — may use either MT oils or special fluids, but strictly as per the manufacturer’s approval.

Important: Oils for different gearbox types are not interchangeable. Using the wrong product can cause severe transmission damage.

OPTIMAL Transmission Oil Product Range

We offer oils for various types of transmissions and operating conditions:

  • OPTIMAL ATF III — semi-synthetic all-season oil for commercial, heavy-duty, and passenger vehicles, as well as automatic transmissions. Recommended for Ford MERCON.

  • OPTIMAL ATF IID — universal fluid for automatic transmissions in buses, minibuses, cars, and trucks.

  • OPTIMAL TM-5-18 Super — premium oil with European additive packages for heavy-duty transmissions.

  • OPTIMAL TM-5-18 — for rear-wheel-drive cars, trucks, pickups, vans, and minibuses.

  • OPTIMAL TM-4-12 SAE 80W85 — all-season oil for manual gearboxes and front-wheel-drive cars.

  • OPTIMAL 85W140 — for heavy-duty equipment operating in harsh conditions.

  • OPTIMAL TAD-17I — mineral all-season oil for trucks and special machinery.

  • OPTIMAL TAP-15V — mineral all-season oil for axles and reducers.

  • OPTIMAL Nigrol — mineral summer oil for transmissions.

Tips for Choosing the Right Oil

  • Always follow the vehicle manufacturer’s recommendations.

  • Match the oil to the gearbox type.

  • Consider the climate and operating conditions.

  • Check SAE and API compliance.

How to Buy OPTIMAL Transmission Oil in Ukraine

Contact us at +38 (050) 407-55-51 or submit a request on our website.
Nationwide delivery across Ukraine, fast shipping, wholesale discounts for regular customers.