Why can't the Kaiyi C3 use 92-octane gasoline?

3 Answers
LaMiguel
07/23/25 7:55pm
Kaiyi C3 should use 92-octane gasoline, as this fuel grade is recommended in the vehicle's official user manual. In addition to checking the appropriate fuel grade in the user manual, the Kaiyi C3 also indicates the recommended gasoline grade on the fuel tank cap. Typically, the fuel grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, while those with a compression ratio between 10.0-11.5 should use 95-octane gasoline. For higher compression ratios, 98-octane gasoline is recommended. However, with the application of new technologies, the compression ratio alone cannot determine the appropriate fuel grade. High compression ratio engines can also be tuned to use lower-octane gasoline due to factors like ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, higher gasoline grades have higher octane ratings and better anti-knock properties. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. Occasionally using the wrong gasoline grade in the Kaiyi C3 only requires switching back to the correct grade after consumption. However, long-term use of the wrong gasoline grade can have the following effects: Using a higher-octane gasoline in a vehicle designed for lower octane won't cause damage, but the increased octane rating alters the fuel's ignition point, leading to delayed combustion. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. Using lower-octane gasoline in a vehicle designed for higher octane can cause engine knocking. The significantly lower octane rating lowers the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance is generated during the upward stroke. This resistance makes the engine run very unstably. Mild knocking only increases noise without significant engine damage, but severe knocking indicates serious engine conditions, affecting driving stability and causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring.
Was this review help?
20
1
Share
VonMalachi
08/10/25 3:31pm
I drove a Kaiyi C3 and initially filled it with 92-octane gas to save money, but the engine made knocking sounds during acceleration, with noise as loud as drumming. Later, I checked the manual and found it requires at least 95-octane fuel because the engine has a high compression ratio. The 92-octane fuel’s low octane rating caused premature combustion, leading to knocking, which could damage pistons and valves. I recommend sticking to 95-octane fuel—otherwise, long-term use of lower-grade fuel will increase carbon buildup, spike fuel consumption, and cost thousands in repairs. Regular maintenance checks on fuel quality can prevent these issues—don’t cut corners to save a few bucks and end up costing yourself more.
Was this review help?
9
5
Share
Expand All
LaEden
09/23/25 2:50am
As a car enthusiast, I must say the engine design of the Kaiyi C3 is not suitable for 92-octane gasoline, primarily due to its high compression ratio. The 92-octane fuel lacks sufficient anti-knock properties, making it prone to pre-ignition and knocking under high temperature and pressure conditions. In mild cases, this can lead to reduced power output, while severe cases may cause component damage. I once tried filling up with 92-octane, and the engine idled unevenly with warning lights illuminating on the dashboard. From a safety perspective, engine knocking could potentially cause sudden stalling, which is particularly dangerous during high-speed driving. It's strongly recommended to use 95-octane fuel as specified in the manual, or blend higher-octane fuel for compensation. From a maintenance standpoint, regular fuel quality checks can significantly extend engine lifespan.
Was this review help?
8
2
Share
Expand All
More Forum Discussions

Where is the license plate Meng H from?

Meng H is the license plate for Xilin Gol League in Inner Mongolia. Here is some relevant information: 1. Meng A - Hohhot City, Meng B - Baotou City, Meng C - Wuhai City, Meng D - Chifeng City, Meng G - Tongliao City, Meng E - Hulunbuir League, Meng F - Xing'an League, Meng H - Xilin Gol League, Meng J - Ulanqab League, Meng K - Ih Ju League, Meng L - Bayannur League, Meng M - Alxa League. 2. License plate numbers can be customized, except for the first two characters which must comply with national regulations, the rest can be freely chosen. The current civilian license plate system is the 92-style, which has been in use nationwide since July 1994. 3. The first character of the license plate is a Chinese character: it represents the provincial-level administrative region where the vehicle is registered, which is the abbreviation of the (province, municipality directly under the central government, autonomous region), for example: Beijing is Jing, Shanghai is Hu, Hunan is Xiang, Chongqing is Yu, Shandong is Lu, Jiangxi is Gan, Fujian is Min. The second character of the license plate is an English letter: it represents the prefecture-level administrative region where the vehicle is registered, which is the letter code for each (prefecture-level city, region, autonomous prefecture, league), generally ranked according to the situation of each prefecture-level administrative region by the provincial vehicle management office: (the letter 'A' is the code for the capital, provincial capital, or the central urban area of a municipality directly under the central government, and the subsequent letters are ranked in no particular order).
5
5
Share

Is it necessary to purchase auto theft insurance for sedans?

Theft insurance can be purchased based on individual needs. If the vehicle itself is of high value and has excellent anti-theft technology, it is generally not necessary to buy. The following three types of car owners are usually advised to purchase theft insurance: 1. New car owners, as stolen vehicles are often dismantled and sold, resulting in significant losses even if recovered; 2. Owners who do not have a fixed garage or frequently travel on business, usually parking in open parking lots or older residential areas without surveillance; 3. Owners of vehicles that are prone to theft, such as the Wuling series, Changan series, etc.
8
3
Share

Where is the car air conditioning cooling switch located?

Pressing the A/C button in a car activates the air conditioning cooling function. Below are specific introductions to common car buttons: 1. ON for turning on: The light lever in a car typically has ON and OFF positions, where ON turns the lights on and OFF turns them off. 2. SEL button for menu selection confirmation: This is usually found on the multifunction steering wheel. The OK button serves the same function as the SEL button, with some cars using SEL and others using OK. 3. VOL+/- for volume adjustment: VOL is the abbreviation for volume, allowing adjustment of the car audio system's volume. 4. MUTE for muting: This button instantly mutes the audio.
20
2
Share

What is the MA car?

MA stands for Maserati. Here are the relevant details: 1. Manufacturer of Maserati: Maserati is an Italian luxury car manufacturer, founded on December 1, 1914, in Bologna, with its current headquarters in Modena. The brand's emblem is a trident. In 1993, Fiat (Fiat S.p.A.) acquired Maserati, allowing the brand to continue. 2. Maserati Models: Maserati was once part of Ferrari and is now directly owned by Fiat Chrysler Automobiles. Today's new Maserati coupe series represents the pinnacle of Italian coupe manufacturing technology and is a perfect blend of Italian design aesthetics and high-quality craftsmanship.
14
4
Share

Can Automatic Transmission Cars Stall?

Automatic transmission cars can also stall. Here are the reasons for automatic transmission stalling: 1. Using inferior fuel: Some gas stations sell impure fuel for excessive profits. Prolonged use of low-quality fuel can lead to excessive carbon deposits in the engine, making the car prone to stalling; 2. Clogged fuel lines: Blocked fuel lines are another major cause of stalling, often due to poor fuel quality containing excessive gum deposits that obstruct fuel flow; 3. Insufficient driving skills: Inadequate driving proficiency is another significant factor causing stalling, though this typically applies to novice drivers.
9
3
Share

What is the ground clearance of the Golf Sportsvan?

The Golf Sportsvan has a ground clearance of approximately 115mm, with a body length of 4351mm, width of 1807mm, height of 1574mm, and a wheelbase of 2685mm. The Golf Sportsvan is a model under the Volkswagen brand, equipped with Volkswagen's latest generation EA211 series engine. It also features a newly tuned chassis system, with a front McPherson strut suspension and multi-link independent rear suspension. In terms of active safety, it is equipped with an electronic stability system, including an anti-lock braking system, brake assist system, and multiple safety protection systems. Additionally, it comes with a fatigue warning system, BSD blind spot monitoring, MKB multiple collision prevention system, tire pressure warning system, and other active safety protection equipment.
3
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.