Question 1

Which oil should I choose for my car?

Accepted Answer

Check your vehicle's service book or owner's manual: it lists the recommended viscosity (for example, 5W-30) and the manufacturer approval (for example, VW 504 00). With this information, choose an Extra Standard Oil product using the catalogue filters. If in doubt, send us a message through the contact form — our engineers will help you choose free of charge.

Question 2

What is the difference between synthetic, semi-synthetic and mineral oil?

Accepted Answer

Mineral oil is refined directly from crude oil: it is inexpensive but ages quickly and has a narrow operating range. Semi-synthetic oil is a blend of mineral and synthetic oils — a compromise between price and performance. Synthetic oil is produced by chemical synthesis or deep hydrocracking (PAO, esters, GTL); it offers better protection, fuel savings, longer drain intervals and stability at extreme temperatures. For modern turbocharged and direct-injection engines, synthetic oil is a must.

Question 3

What do 5W-30, 0W-20, SAE and API mean?

Accepted Answer

SAE is the viscosity classification. The number before the W (winter) describes cold-weather performance (0W = down to −35°C, 5W = down to −30°C). The number after the W is the viscosity at +100°C (30 is thinner, 40 is thicker). API (American Petroleum Institute) and ACEA (European Automobile Manufacturers' Association) are performance quality categories. The later the letter in the API category (SP > SN > SM > SL), the more modern the standard.

Question 4

How often should I change my engine oil?

Accepted Answer

The standard interval is 10,000–15,000 km or once a year. Under severe conditions (city traffic, taxi use, towing a trailer, extreme temperatures) — every 5,000–7,500 km. For each Extra Standard Oil product, the recommended interval is stated in the PDS. Do not exceed the interval even with a high-quality oil — additives have a limited service life.

Question 5

Can I mix oils from different manufacturers?

Accepted Answer

In an emergency (topping up to the correct level), you may mix oils of the same viscosity and API/ACEA category. Do not mix them on a regular basis: different additive packages may conflict and reduce protection. If you are switching to Extra Standard Oil, a full oil change with a system flush is recommended.

Question 6

Which standards do Extra Standard Oil products meet?

Accepted Answer

Extra Standard Oil lubricants meet international quality standards and the SAE, API and ACEA classifications. The specifications and approvals for each product are listed on its page and in its PDS.

Question 7

Where are Extra Standard Oil products made?

Accepted Answer

All products are manufactured at our plant in Tashkent, Uzbekistan. Our oils are produced to international quality standards, and every batch is tested in the laboratory before it is shipped to the customer.

Question 8

Does Extra Standard Oil have environmental certificates?

Accepted Answer

We use environmentally friendly, innovative production technologies and check the quality of every batch. Certificates of conformity for a specific product can be requested through the contact form or at extrastandartoil@gmail.com.

Question 9

Can I order wholesale?

Accepted Answer

Yes. We work with dealers, service centres, corporate fleets and industrial companies. Minimum order quantities and delivery terms are agreed individually. Contact our sales department through the contact form.

Question 10

What are the terms for dealers?

Accepted Answer

The basic dealer programme includes wholesale prices, territorial exclusivity, marketing support (POS materials, training, advertising campaigns) and reliable delivery times. Terms depend on purchase volumes and region. Details are provided after an initial consultation.

Question 11

How can I become a partner?

Accepted Answer

Fill in the form on the Contact page and mark it "Partnership", or write to extrastandartoil@gmail.com. Our manager will get back to you within 24 hours and explain the partnership opportunities in your region.

Question 12

Where can I download the PDS and SDS?

Accepted Answer

Product data sheets (PDS) and safety data sheets (SDS) can be downloaded on each product page and in the PDS / SDS section, which collects documents for the whole catalogue with filters by product and language.

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