Benefits of High Octane Rating?

1 Answers
StKate
09/05/25 5:49am
High octane rating can prevent knocking in the engine and allow the ignition timing to be advanced further, thereby improving the engine's power output. Here is some relevant information about octane rating: 1. Introduction: The higher the octane rating, the higher the gasoline grade. Different grades of gasoline have different octane ratings, but beyond that, the differences are minimal. 2. Refueling Note: If the engine operates at a relatively high temperature and the pressure in the cylinder is also high, it generally requires 95-octane gasoline. Using 92-octane gasoline may cause knocking. 3. Knocking: Knocking is an abnormal combustion phenomenon in the engine. When the piston is in the compression stroke, it moves upward to compress the combustible mixture, causing the temperature and pressure of the mixture to rise. If the gasoline's anti-knock properties are poor, the combustible mixture may ignite prematurely before the spark plug fires, which is known as knocking. The burning mixture pushes the piston downward while the piston is still moving upward, leading to reduced engine power and increased fuel consumption. Severe knocking can also damage the engine.
Was this review help?
5
4
Share
More Forum Discussions

Does the Transmission Filter Screen Need to be Replaced?

Whether the transmission filter screen needs to be replaced depends on the specific situation: 1. For those made of filter paper material: After long-term use, many impurities will adhere to it, requiring replacement; 2. For those with a fine wire mesh filter layer: No replacement is needed, as they can be removed, cleaned, and reused. The transmission filter screen is a device installed inside the transmission to filter out oil contaminants. The functions of the transmission are: 1. To change the transmission ratio and expand the range of torque and speed changes of the drive wheels; 2. To allow the vehicle to reverse while the engine's rotation direction remains unchanged; 3. To use neutral gear to interrupt power transmission, enabling the engine to start, idle, and facilitating gear shifting or power output.
11
1
Share

What car is the ram's head logo?

The ram's head logo represents Dodge. Dodge's automotive brands include Caliber, Avenger, Journey, Grand Caravan, Dodge Ram, etc. Taking the 2011 Caliber as an example, it is a compact SUV with body dimensions of 4415mm in length, 1800mm in width, and 1535mm in height, a wheelbase of 2635mm, a fuel tank capacity of 51 liters, and a curb weight of 1475kg. The 2011 Caliber features a front MacPherson strut independent suspension and a rear multi-link independent suspension. It is equipped with a 2.0L naturally aspirated engine, delivering a maximum horsepower of 156PS and a maximum power of 115kW.
13
0
Share

Is it necessary to engage the handbrake after parking an automatic transmission car?

It is necessary to engage the handbrake after parking an automatic transmission car, as doing so can prevent rollaway accidents. The functions of the handbrake are: 1. When parking, engaging the handbrake keeps the car stationary and prevents it from rolling downhill; 2. During driving, applying the handbrake while turning can create a drifting effect; 3. In emergency situations, the handbrake can serve as a brake. The working principle of the handbrake is: 1. The brake disc connected to the driveshaft transmits the pulling force back through the cable to achieve parking braking; 2. After pulling the handbrake, the hydraulic auxiliary cylinder is used to push the hydraulic master cylinder under the car, which then drives the air valve to act and brake the driveshaft.
12
1
Share

What car brands are under Ford?

Ford's automotive brands include: Ford, Lincoln, and Mercury. The models under Ford include: Focus, Escort, Taurus, Mondeo, Territory Explorer, etc. Taking the 2021 Focus as an example, its body dimensions are: length 4647mm, width 1810mm, height 1468mm, wheelbase 2705mm, fuel tank capacity 53 liters, and trunk capacity 511 liters. The 2021 Focus is equipped with a 1.5L naturally aspirated engine, with a maximum power of 90kW and a maximum torque of 153Nm, paired with a 6-speed manual transmission.
18
0
Share

Is It Normal for a Manual Transmission to Shudder When Starting?

Manual transmission shuddering during startup is abnormal, and the reasons are: insufficient engine power, loose connections between the transmission and chassis, or uneven engagement between the clutch pressure plate and clutch friction disc. The impacts of manual transmission shuddering during startup include: 1. Aggravating engine carbon buildup; 2. Damaging the car's spark plugs; 3. Accelerating the aging of engine components; 4. Increasing wear on the clutch pressure plate. The method for starting a manual transmission car is: 1. Insert the key and turn on the ignition switch to start the engine; 2. Press the clutch pedal and shift the gear lever into first gear; 3. Release the handbrake, lift the clutch pedal, and press the accelerator.
1
4
Share

What grade of fuel does the BMW X5 use?

BMW X5 uses 98-octane gasoline. Gasoline is a volatile and flammable hydrocarbon mixture liquid distilled or cracked from petroleum, used as fuel. Different grades represent different fuel anti-knock properties, with higher octane numbers indicating better anti-knock performance. The BMW X5 has body dimensions of: length 4930 mm, width 2004 mm, height 1776 mm, and a wheelbase of 2975 mm. The BMW X5 is equipped with a 2.0T turbocharged engine, delivering a maximum horsepower of 265 hp and a maximum power of 195 kW, paired with an 8-speed automatic transmission.
6
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.