What is blended oil and what oils are mixed to make it?
3 Answers
Blended oil refers to the fuel oil produced by refineries through mixing heavy oil for burning with other oil products. Blended oil is a specialized oil used in two-stroke engines. Currently, apart from racing cars that still use two-stroke engines, there are virtually no vehicles utilizing two-stroke engines. Therefore, if blended oil exists, it is specifically for racing cars. The role of blended oil is actually quite limited in current applications. Two-stroke engine oil, in addition to its functions of lubrication, cooling, and sealing, also has a combustion-assisting effect compared to four-stroke engines. This means that during operation, it burns oil, and to enhance operational efficiency, blended oil is required. Current special fuel oil tax regulations stipulate: According to the relevant provisions of the current special fuel oil tax, when levying the special fuel oil tax, the proportion of heavy oil that can be distinguished in the mixed fuel oil is subject to taxation. The calculation formula for blended oil is: The taxable amount per ton of heavy oil in mixed fuel oil = The proportion of heavy oil in the mixed fuel oil X The unit tax amount of heavy oil. Based on whether it becomes a commodity upon leaving the factory, fuel oil can be categorized into commercial fuel oil and self-use fuel oil.
In automotive maintenance, blended oil typically refers to formulated lubricating oil, which is primarily composed of a mixture of mineral base oil and a portion of synthetic base oil. Mineral oil is derived from petroleum refining, offering lower cost but slightly inferior durability; synthetic oil, on the other hand, is artificially manufactured, delivering high performance but at a higher price. Blending them creates a cost-effective option known as semi-synthetic lubricating oil. Manufacturers also add additives such as anti-wear agents and detergent dispersants to enhance the protective properties of the oil. My years of vehicle usage experience indicate that blended oil is suitable for daily driving vehicles, as it balances the lubrication needs of the engine with usage costs, avoiding the issues of easy aging with pure mineral oil and the high expenses of pure synthetic oil. When selecting, ensure the product carries industry certifications, which guarantees its safe use in engines or transmissions and extends the oil change interval. After all, minor oversights can lead to major troubles, so it's essential to choose reliable brands.
As a DIY car owner, I often deal with oil-related issues: Blended oil is essentially a lubricant that mixes mineral oil with synthetic oil, not some casually mixed gasoline or similar. Mineral oil is cost-effective but prone to oxidation, while synthetic oil is high-performing yet expensive. Blending them enhances overall performance while keeping costs in check. Semi-synthetic oils are commonly available on the market, typically with an 80% mineral and 20% synthetic ratio, often supplemented with additives like rust inhibitors or anti-foaming agents. I've used it in oil change projects and noticed smoother lubrication and reduced engine noise. For beginners, I recommend choosing products with standard SAE viscosity to avoid cheap options that could shorten vehicle lifespan, while also monitoring oil pressure changes. This approach saves maintenance time and is somewhat more environmentally friendly.
