Industrial lubricant suppliers: how to buy directly from the manufacturer?

Buying lubricating oil directly from the manufacturer means dealing with the company that blends and packs the oil, with no store or reseller in between. To get a price, send the plant four pieces of information: what the oil must meet (or the name of the oil you use today), the machine it works in, how much that machine uses per month and the documents your company requires. Then, on every delivery, check that the oil that arrived is the same one the plant approved.

Who makes lubricating oil?

The oil that reaches your machine is made by a lubricant plant: it combines two raw materials, approves each blend in the laboratory and packs the result.

Think of a bakery. The flour comes from the mill. The bakery adds a little yeast and salt to the flour and makes the dough in batches. Lubricating oil is built in a similar way.

Most of a lubricant is base oil, the "flour" of the recipe. The most common is mineral, made at the refinery from crude oil. There is also synthetic base oil, made by the chemical industry; re-refined oil, recovered from used oil; and, in biodegradable oils, the vegetable kind.

The guide on what base oils are explains each type, and the article on synthetic, semi-synthetic and mineral oil shows when each one pays off.

The lubricant plant adds a small dose of additives to the base oil: chemicals that give or strengthen a quality of the oil, such as protecting parts against wear, rust or foam.

The blend is made all at once, in a tank. Each blend is a batch, with its own number, like one oven load of bread.

Before packing, the laboratory (the plant's own or one it hires) measures a sample of the batch. The batch is approved only if every result falls inside the product's range, the accepted limits (a minimum, a maximum or both). The result around which batches usually fall is the typical value, given as a reference.

Bread works the same way. A 50 gram roll can come out at 48 or at 52 and still be accepted: that is the range. The 50 grams, the weight around which the rolls usually come out, is the typical value.

Once approved, the oil goes into pails, drums and other packages, a step called filling. From there it goes to industry, directly or through a distributor, a company that buys from the plant and resells. The whole chain has five links:

• the refinery or other base oil producer;

• the additive supplier;

• the lubricant plant, which blends, approves and packs;

• the distributor or reseller;

• the plant that uses the oil.

Figure 1. The oil's path to your plant: the lubricant plant blends the base oil and additives in batches, approves them in the laboratory and packs them; from there the oil goes directly or through a distributor (the batch number is an example).

Kelpen Oil sits at the plant link: it formulates and manufactures ready-to-use lubricants in Arujá (SP, Brazil). It also distributes base oils, the product of the first link and the raw material of lubricant plants. It is not a refinery and does not make base oil. We at Kelpen Oil have been a reference in base oil distribution since 1999; the line is on the page for base oils for industry.

"Finished lubricating oil" is the name Brazilian regulation gives to the ready-to-use product, already blended and approved. Whoever produces it needs authorization from the federal agency that regulates the petroleum sector, the ANP (ANP Resolution No. 941/2023); the details are in the section on how to tell whether a manufacturer is real.

For those who need the number: a buyer of base oil to make lubricant receives, with every shipment, the quality certificate; the invoice carries its number (ANP Resolution No. 911/2022, arts. 3 and 4). For ready-to-use lubricant, the certificate of each batch is a requirement set by the buyer.

With the links in view, the practical question is which one to buy from.

Plant or industrial lubricant distributor: who to buy from?

Both routes are legitimate, and many companies use both. The plant suits you better when you need the right oil and want to know which batch each drum came from; the distributor, when you need a small amount of a common oil, today.

Knowing which batch each drum came from, and being able to trace it back to the blend and the laboratory result, is called traceability. Whoever blends the oil is the one who keeps that record.

This guide is for those who use the oil in their own operation. Those who want to resell can talk to the Kelpen Oil Technical Team.

Once you have chosen the plant, the next step is telling it what you need.

What does an industrial lubricant supplier need to know to quote?

The supplier needs four pieces of information: what the oil must meet (or the name of the current oil), the machine and its working conditions, the monthly consumption and the documents your company requires. The first is the one that causes the most delay, so we start with it.

Nobody buys "a tire": you ask for the size molded on the sidewall, such as 205/55 R16. Oil also has a size, the specification, and it has two parts.

The first part is the thickness of the oil, how much it resists flowing. Honey flows slowly and water flows fast; that resistance is called viscosity. It is written as a number, the ISO VG grade (32, 46, 68 and so on): the higher the number, the thicker the oil. The article on what ISO VG means explains the whole scale.

The second part is the protections the oil must have. A standard describes them: a public document with the list of tests and limits the oil must meet. Inside the standard, each type of oil has a short name, the class.

Putting the two parts together, the specification fits on one line: "hydraulic oil with anti-wear additive (class HLP of the German standard DIN 51524 part 2), ISO VG grade 68". Two oils sold as "hydraulic 68" can have the same thickness and different protections; that is why the commercial name alone is not enough.

The specification is usually in the machine manual, on the nameplate or on the package of the current oil.

Figure 2. Like a tire, oil has a size: the standard and class say which protections it must have, and the ISO VG grade says its thickness. The commercial name alone does not guarantee both.

With that, the list of what to send for a quote looks like this:

1. The specification or, failing that, the name of the current oil. It defines the product. If you only have the name, the Kelpen Oil Technical Team helps find the specification from it.

2. The machine and the working conditions. Temperature, water or dust change the protection the oil must have. For the hydraulic circuit, the guide to types of hydraulic oils helps find the class; for gearboxes, see which oil to use in gear reducers.

3. The monthly consumption. It decides the package, the subject of the next section.

4. The documents your company requires. Include what your own customer requires, such as oil for incidental food contact (machine oil that may touch food by accident, in a leak over the conveyor). The documents are explained further on.

At Kelpen Oil, the specification in the example corresponds to Supra AW 68, from the Supra AW line, which meets DIN 51524 part 2.

For those who need the number: under ISO 3448, the grade number is the midpoint of the viscosity range at 40 °C, with a 10% margin up or down. The unit is the centistoke (cSt), equal to 1 mm²/s: ISO VG 68 runs from 61.2 to 74.8 cSt. This is the industrial oil scale; engine and gear oils use another, SAE.

Also for those who need the number: the manual may ask for the oil by ISO 11158, which splits mineral hydraulic oil into three classes: HL (protects against rust and oxidation), HM (also protects against wear) and HV (like HM, with viscosity changing less with temperature). In DIN 51524, HL is part 1, HM is HLP (part 2) and HV is HVLP (part 3).

The classes correspond, but each standard has its own tests and limits; check that the oil declares the standard the manual cites.

Monthly consumption leads to a common doubt for those who buy small amounts.

Do I need to buy lubricating oil in bulk to talk to the plant?

No. At Kelpen Oil, filling is on demand, from the pail to bulk (oil delivered by tank truck, without packaging), and the package follows your operation's consumption. The formats of each product are confirmed in the quote. Sales are for companies only, with a CNPJ (the Brazilian company tax number).

A practical rule helps with the decision: choose the package by how long it takes to run out. Every time a package is opened, moisture and dust get in. A 200 liter drum that stays open for months, used little by little, collects more dirt than 20 liter jerrycans opened one at a time and used up.

Figure 3. A drum opened many times over months collects the dust and moisture of every opening; smaller packages, used up, take in less. Choose the package by how long it takes to run out.

When taking the oil out of the package, do not use dirty funnels, pails or pumps: whatever is on them goes into the machine along with the oil.

Store the drum under cover. If it has to stay outside, lay it down with the two bungs (the threaded caps of the drum) lined up horizontally, or keep it upright and slightly tilted, so water does not sit on the lid. Even closed, when left in the open, it "breathes" with the heat of the day and the cold of the night, and can draw in the water collected on the lid.

For those who need the number: for Supra AW 68 and the base oils, the formats are a 20 liter jerrycan, a 200 liter drum, a 1,000 liter container (the IBC, a cubic plastic tank protected by a metal cage) and bulk.

Once the purchase is closed, the order follows a path until it reaches your door.

What is the path of the order, from specification to delivery?

The order goes through five steps: the first two happen on the first order, and the other three repeat on every delivery. At each one there is something you check.

1. Specification. You send the four items from the quote list, and the supplier's technical team recommends a product.

2. Datasheet or sample. You check whether the standard and grade of the recommended product are the ones the manual calls for. The product datasheet is the document that describes it: what it is for, which standard it meets and the typical values. Some suppliers also send a sample for testing.

3. Approved batch. The plant blends the batch, the laboratory measures a sample and releases it only if every result falls inside the product's range. The results go into the batch's certificate of analysis, also called the batch report. The article on how the laboratory approves or holds a batch shows this step from the inside.

4. Filling and dispatch. The oil goes into the package ordered and leaves the plant only after approval.

5. Delivery. You check the invoice, the label, the seal, the batch number and the manufacturing date on the package (the date counts toward shelf life). You also check the product's safety data sheet (the SDS, explained further on) and whether the batch number on the package is the same as on the certificate.

How this shows up in your plant: when a step fails, the oil arrives with the right name and the wrong grade (a 46 instead of a 68) or with water and particles from a badly closed package. A drum may also arrive without a legible batch, or with the certificate of another batch. The effect appears later, in the machine:

• oil thinner than ordered leaks more inside the hydraulic pump and heats up;

• that thinner oil also thins the film that separates the moving parts, and wear increases;

• particles clog the filter ahead of schedule;

• water makes the oil cloudy and favors rust;

• mixing with another oil can cause foam or sludge (a pasty deposit that clogs filters).

And without the batch number, nobody knows which blend that oil came from.

Figure 4. The path of an order placed directly with the plant: steps 1 and 2 settle the specification on the first order, and steps 3 to 5 repeat on every delivery. Under each step, what to check.

For those who need the number: ANP Resolution No. 804/2019, art. 12, § 1, requires the batch and manufacturing date to be printed on the package or label during filling, for the lubricants that the ANP requires to be registered. Registration is the prior approval of each product, required only in some categories and explained further on. For the others, such as ordinary hydraulic oil, printing batch and date is market practice.

There are several papers, and each proves something different.

Which documents should you ask a lubricating oil supplier for?

Ask for the product datasheet before the first order, the certificate of analysis on every delivery and the safety data sheet before the first receipt. The report on the analysis of oil in use belongs to maintenance, not to purchasing.

Think of a car. The catalog describes the model and applies to all identical cars; the inspection report speaks only of yours. The datasheet is the oil's catalog, and the certificate of analysis is the inspection of the batch that arrived.

A common mistake is approving the purchase by the typical value on the datasheet. The typical value is a reference; what counts for your drum is the result on the certificate, which can differ from the typical and still be inside the range.

Figure 5. The datasheet describes the product and applies to every batch; the certificate of analysis applies only to the batch whose number it carries (three batches of the same product, example numbers).

One of these documents has two names, and that confuses many people.

What is the FISPQ of a lubricating oil and why is it now called SDS?

The FISPQ is the product's safety sheet, and it became known as the FDS (in English, SDS) in the 2023 revision of the Brazilian standard that covers it. It works as the oil's safety leaflet: it says what the oil can cause, how to store it and what to do if something goes wrong.

The old name, FISPQ, stands for chemical product safety information sheet. The new one, FDS, is the Safety Data Sheet, from ABNT NBR 14725 (ABNT is the Brazilian Association of Technical Standards). The sheet states the hazards, storage, protective equipment and what to do in a spill or fire.

Ask for the SDS in Portuguese before the first receipt and check that it already follows the 2023 edition. The person who receives the oil, the safety technician and the fire brigade all use the same sheet, so it must be in the warehouse before the first drum.

For those who need the number: ABNT NBR 14725:2023 merged the former parts 1 to 4, and the new format has been mandatory since July 4, 2025. The SDS follows the 16-section GHS model, the UN system for classifying and labeling chemicals. Regulatory Standard NR 26, from the Brazilian Ministry of Labor, also covers the safety sheet in the workplace.

What remains is to know whether whoever sends these papers is really a manufacturer.

How can you tell whether a lubricating oil manufacturer is real?

Check five things: the authorization to produce, the product registration, the address of the plant and laboratory, the quality certificate and, finally, the plant with your own eyes, on a visit. The papers prove that the company may produce; the visit lets you see the plant.

Think of the permit on the restaurant wall: it shows the restaurant may operate, but you only see the kitchen by walking into it. A lubricant plant is the same.

1. ANP authorization. In Brazil, whoever produces lubricant needs authorization from the National Agency of Petroleum, Natural Gas and Biofuels (ANP). Check in the ANP public lookup, by CNPJ (the company's number at the Brazilian Federal Revenue), whether it is active. Also look at the category, that is, the type of oil the company may produce: industrial, automotive or both.

2. Product registration. The authorization belongs to the company; the registration belongs to each product, and the ANP requires it only in some categories. Ordinary hydraulic and gear oils are exempt. On a registered product, the label carries the official name of the producing company, its CNPJ and the registration number, and you can check them on delivery.

3. Plant address and laboratory. Ask where the oil is blended and filled, who approves the batches, whether the laboratory belongs to the plant or is contracted and which tests run there. Ask for an example certificate of analysis.

4. ISO 9001 certificate, the quality management standard. Check the validity, the scope (the activities and address the certificate covers) and whether the certificate appears on the website of the body that issued it.

5. Technical visit to the plant. The visit shows the plant at work. Whoever sees the blending, the laboratory and the warehouse understands what they are buying, and the address visited must be the same as in the ANP authorization and in the ISO 9001 scope.

The authorization shows that the company may produce, but it does not prove its own plant, because the rule allows production in another company's facility. Those who only resell do not need it.

Kelpen Oil, a brand of Spark Lubrificantes LTDA, has held continuous ISO 9001 certification since 2003 and a 6,000 m² manufacturing site in Arujá (SP), with an integrated laboratory. The technical visit to the plant is made by appointment.

For those who need the number: ANP Resolution No. 941/2023 covers the authorization of the producer of finished lubricating oil. It provides three categories: industrial, automotive, or industrial and automotive (art. 4). It accepts an own laboratory or a contract with a specialized laboratory (art. 5, XI) and allows production in own or third-party facilities (art. 1, sole paragraph). The company may start producing only after the authorization is published in the Federal Official Gazette (art. 8).

For those who need the number: ANP Resolution No. 804/2019, art. 2, lists the categories that need registration before sale: almost all for automotive, aeronautical or marine use, plus biodegradable oils and industrial oils for incidental food contact. Under the sole paragraph of the same article, the others are exempt. Labeling (producer's CNPJ, registration number, batch and date) is in art. 12.

In the food industry, buyers of oil for incidental contact often ask for more than the ANP registration. They also ask for NSF H1 registration (lubricant that may touch food by accident), from NSF, the American food safety organization, or ISO 21469 certification.

To close, an example of a plant seen from the inside.

How does Kelpen Oil approve each batch before it leaves the plant?

At the Arujá (SP) plant, the approval of each batch has four points:

• blending is done in batches, in mixers;

• no batch leaves without the approval of the in-house laboratory in Arujá (SP), which runs 25 types of analysis;

• each batch leaves a retained sample, a vial of the batch itself to repeat the test on the same oil if there is doubt;

• the record links raw material, batch and destination: from the batch number you get to the results and to the retained sample.

The tests and how to read the certificate are in the article on the laboratory, cited in step 3 of the order.

For those who need the number: ISO 9001:2015, clause 8.6, requires that the product be released only after the planned checks and that the release be recorded, with evidence of conformity and traceability to whoever authorized it. The standard asks for the method; it does not say which tests to run.

Frequently asked questions

Is buying directly from the manufacturer cheaper? It depends on volume, packaging and freight, and nobody should promise it before quoting. What direct purchase brings beyond price is a specification checked on the first order, a traceable batch on every delivery and a technical contact when something is not as expected.

Does the plant sell lubricating oil to small companies? At Kelpen Oil, yes: with on-demand filling, the package follows consumption, with formats confirmed in the quote. Sales are to companies, with the Technical Team guiding the choice.

What is the NCM of industrial lubricating oil? The NCM is the Brazilian fiscal product code (the Mercosur Common Nomenclature) printed on the invoice. For most ready-to-use lubricants it is 2710.19.32 (petroleum oil with additives, 70% or more by weight). Without additives it is 2710.19.31; with less than 70% petroleum oil, as in many ester-based lubricants (a type of synthetic base oil), the product goes to heading 3403. Each product's NCM comes on the invoice and is confirmed in the quote.

How do you switch oil suppliers without risk to the machine? Keep the same standard and the same ISO VG grade, and ask whether the new oil can be mixed with the one in the system: additives of a different chemistry can react and form sludge (a pasty deposit that clogs filters). When the chemistry changes, drain and flush the system before filling.

Glossary

• ANP: the Brazilian National Agency of Petroleum, Natural Gas and Biofuels, which authorizes lubricant producers and registers some product categories.

• Specification: the oil's size, in two parts: the standard and class (the protections) and the ISO VG grade (the thickness).

• SDS (FDS): Safety Data Sheet, the current name of the FISPQ under ABNT NBR 14725:2023.

• ISO VG grade: a number that indicates the oil's viscosity range at 40 °C (ISO 3448); the higher it is, the thicker the oil.

• Traceability: being able to go back from the drum to the batch, the blend and the laboratory result.

Talk to the Technical Team

The Kelpen Oil Technical Team reviews the specification or the oil you use today, the machine, the working temperature and the monthly consumption, and recommends the product and the package. If the oil is already in use, the Arujá (SP) laboratory performs the analysis of oil in use, as a paid service. Before asking for the first quote, write down the specification from the manual, the name of the current oil and last month's consumption. Save this article or send it to whoever handles lubricant purchasing in your company.