How many grades of engine oil does the complete Castrol series have?
3 Answers
Castrol's Edge and Magnetec series of engine oils are both rated at SN grade. The Castrol GTX series has two grades, SN and SM, while the Castrol GTX Silver is rated at SL grade. The engine oil grade is SJ, with the grades descending from highest to lowest. Here is some relevant information: 1. API is the most common international certification standard for engine oils, standing for the American Petroleum Institute. Engine oils that pass API testing and certification can display the API double-circle logo on the bottle. The grading standard for engine oils is primarily based on the oil's fluidity at high temperatures, high-temperature cleanliness, diffusion filtration, oxidation stability, wear resistance, corrosion and rust prevention, catalyst compatibility, and environmental requirements (this part will be mentioned later). Currently, there are 12 grades in total: SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN, with SN being the latest. 2. The 'S' represents gasoline engines, and the following letters indicate the grade. The common marking on the can is SJ/CF, where the 'C' after the slash refers to diesel engines, and the grading method is the same, meaning the further the letter is in the alphabet, the higher the grade.
The Castrol oil series is quite extensive. I've been driving for ten years and often use their products. There are roughly four main tiers: First is EDGE fully synthetic oil, which focuses on high performance and protection, especially suitable for drivers who prioritize acceleration and durability. Next is MAGNATEC semi-synthetic, which incorporates magnetic protection technology to better adhere to engine surfaces and reduce wear. Then there's the GTX series, including standard mineral oil and a high-mileage version, the latter specifically designed for older vehicles to extend their lifespan. Lastly, there's the EDGE ECO version, which emphasizes cleanliness and low emissions. These tiers cover various driving needs, such as economical, high-performance, or eco-friendly scenarios. When selecting oil, referring to your car's manual is always reliable. The core of the entire series consists of these four categories, but specific products may vary by region. Ensuring the oil matches your engine can help prevent early failures.
I often do car maintenance myself, and Castrol engine oil is indeed well-categorized. Their full range has 3 core grades: EDGE is premium full synthetic oil, which I use for long-distance driving to provide excellent engine protection; MAGNATEC semi-synthetic is moderate with good adhesion, suitable for urban commuting; GTX includes mineral oil and high-mileage options, being affordable and reliable. Overall, there are about 4 types, each tailored for different driving conditions, such as choosing full synthetic for large temperature variations for convenience. The advantage of having multiple oil grades is the ability to precisely match the vehicle, extending engine life, saving money, and providing peace of mind.
