Can the Tharu use 92 octane gasoline?

2 Answers
HaleyFitz
07/28/25 2:34pm
According to the official vehicle user manual recommendation, the Tharu should use 95 octane gasoline. In addition to checking the suitable gasoline grade in the vehicle user manual, the Tharu's recommended fuel type can also be found on the fuel tank cap, which will be clearly marked. Generally, 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. However, with the application of some new technologies nowadays, the fuel grade cannot be solely determined by the compression ratio. A high compression ratio engine can also be tuned to use lower octane gasoline. This is because, apart from the compression ratio, other factors such as ignition timing, turbocharging technology, and Atkinson cycle technology also play a role. Generally speaking, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the Tharu occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade may have the following effects: For vehicles recommended to use lower octane gasoline, using higher octane gasoline will not cause damage, but the increase in octane number will alter the fuel's ignition point, leading to delayed combustion in the engine. This means both the engine's power output and thermal efficiency will decrease, resulting in poorer performance as experienced by the driver. For vehicles recommended to use higher octane gasoline, using lower octane gasoline may cause engine knocking. Due to the significantly lower octane number, the gasoline's ignition point is reduced, causing premature ignition during the compression stroke. If combustion occurs before the spark plug ignites during the compression stroke, resistance will arise during the upward stroke. This resistance can make the engine run very unstably. If the knocking is imperceptible, it may only increase noise without obvious damage to the engine. However, noticeable knocking indicates severe engine conditions, where the vibrations not only affect driving stability but can also cause abnormal wear on the pistons and cylinders, and in severe cases, even cylinder scoring.
Was this review help?
14
1
Share
Doris
08/11/25 10:33pm
I see that the Tharu can use 92-octane gasoline, but you need to pay attention to the actual performance. I've been driving the Tharu for several years, and in some small cities in the north, 92-octane fuel is common. I've noticed that the power feels slightly weaker, especially when climbing hills—the throttle response is a bit delayed. This might be because the engine has a high compression ratio, and lower-octane fuel can cause slight knocking. In the long run, engine carbon buildup may increase, potentially leading to higher maintenance costs. However, for daily commuting to save some money, it's acceptable, especially when fuel prices fluctuate—you can save nearly 100 yuan per tank. I recommend checking the dashboard for any warning lights after filling up with 92-octane or testing acceleration smoothness on a highway run. Overall, it's not a big issue, but it's best to confirm the recommended fuel grade in the user manual. Actually, mixing fuel grades doesn’t have much impact; the key is to maintain consistent fuel sources to reduce impurities. During regular maintenance, have a mechanic check the spark plugs to identify any issues promptly.
Was this review help?
5
3
Share
Expand All
More Forum Discussions

What are the length, width, and height of the Highlander?

The length, width, and height of the Highlander are 4890mm, 1925mm, and 1720mm respectively, with a wheelbase of 2790mm. Here is some extended information about the Highlander: 1. Model Introduction: This vehicle is a benchmark in the midsize SUV segment. The new Highlander no longer uses a naturally aspirated engine; instead, it is equipped with a 2.0-liter turbocharged engine. 2. Powertrain: This engine delivers 220 horsepower, with a maximum torque of 350 Nm and a maximum power output at 5200 to 5600 rpm. The engine features VVT-iW technology and hybrid injection technology, and it utilizes an aluminum alloy cylinder head and block. It is paired with a 6-speed automatic transmission.
14
5
Share

What to Do When the Passat Sunroof Opens Automatically?

If the Passat sunroof opens automatically, check the sunroof sliding rails. If there are foreign objects or insufficient lubrication on the rails, excessive resistance may trigger the automatic anti-pinch feature, preventing it from closing. This is not a malfunction; simply lubricating the rails once should resolve the issue. Below are some precautions for using the Passat sunroof: 1. Before opening the sunroof, ensure there are no obstacles on the roof that could hinder its sliding. 2. Avoid using the sunroof on bumpy roads to prevent damage to the sunroof and rail components caused by vibrations. 3. Do not open the sunroof during rainy weather or when washing the vehicle to prevent rain or water droplets from aging and rusting the rubber seals and metal parts. If you wish to open the sunroof after rain, make sure to dry the water droplets on the roof first.
4
2
Share

What is HAVAL?

HAVAL is an SUV brand under Great Wall Motors. Here is an introduction to HAVAL vehicles: 1. Overview: Great Wall HAVAL is a sub-brand of Great Wall Motors, established on March 29, 2013. The HAVAL brand, primarily focused on SUV models, operates in parallel with the Great Wall brand, using an independent logo and a separate system for product development, production, and services, mainly engaged in SUV production and sales. 2. Series: It includes two series, the H series and the F series, with HAVAL accounting for the majority of Great Wall brand SUV sales. 3. Sub-brands: HAVAL H2s, HAVAL H2, HAVAL H4, HAVAL H5, HAVAL H6, HAVAL H6 Coupe, HAVAL H7, HAVAL H9.
1
2
Share

What type of engine oil should be used for Geely Vision sedan?

Geely Vision sedan uses engine oil with API quality grade SL or above and SAE5W-30. Below are the specific introductions of engine oils: 1. Mineral oil. Extracted from crude oil, usually mineral oil has very low cost, but since mineral oil base is more prone to oxidation, mineral oils are added with various imported additives, with a service life of about six months. 2. Semi-synthetic oil. The refining cost is high, but it has good oxidation resistance and is quite a good long-lasting engine oil, with a service life of about twelve months. Considering the balance between price and quality, semi-synthetic oil has the widest range of applications. 3. Fully synthetic oil. It is a chemically synthesized engine oil, which can still maintain lubrication even when the base oil fails.
5
5
Share

Geely Emgrand Trunk Suddenly Won't Close

Possible causes include foreign objects obstructing the trunk latch, damage to the trunk lock hook, overly stiff spring rods, or the car keys being left inside the trunk. Below is relevant information: 1. Exterior: The Emgrand maintains Geely's signature family design language overall, with optimized and upgraded details. The vertical waterfall-style water ripple grille integrates seamlessly with the LED headlights, while a swordfish-inspired chrome trim spans the lower grille, giving the vehicle a three-dimensional and fashionable appearance. 2. Specifications: In terms of specific configurations, the Emgrand series has eliminated the dashcam feature across all variants. Additionally, the passenger seatbelt reminder from previous models has been adjusted to only alert for the driver's seat. Regarding wheels, the tire specifications for the 1.5L-5MT Luxury trim have been changed from the previous 205/65-R15 to 195/65-R15.
13
2
Share

What does the blue color on the Mazda3's water temperature gauge mean?

Mazda3's water temperature gauge showing blue indicates that the water temperature is too low. Below are the specific reasons for the low water temperature gauge reading: 1. Thermostat malfunction. The thermostat is stuck in the large circulation position, causing the engine to remain in large circulation after a cold start, resulting in low water temperature and preventing the engine from warming up. 2. Water temperature sensor failure. A faulty water temperature sensor may detect incorrect water temperature readings, which may not reflect the actual engine water temperature. 3. Abnormal radiator fan operation. If the fan runs continuously without engine control, it prevents the engine water temperature from rising. 4. Significant temperature difference between the engine and external environment. In extremely cold weather, the water temperature may rise slowly. It is recommended to warm up the engine for 2 minutes before driving to allow the temperature to rise.
15
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.