What happens if the Tharu is filled with 92-octane gasoline?

[LeAniyah]

If the Tharu is filled with 92-octane gasoline, the dashboard is likely to display a warning light, and the vehicle may experience engine knocking. Additional relevant information is as follows: 1. Engine: The type of gasoline a car should use is primarily determined by the engine's compression ratio. Parameters such as the engine's compression ratio and ignition timing are pre-set in the engine's computer, so as long as the owner strictly follows the manual's requirements for gasoline selection, there will be no issues. 2. Gasoline octane rating: The octane rating refers to the gasoline's anti-knock properties. The higher the octane rating, the better the anti-knock performance. Generally, engines with higher compression ratios require gasoline with better anti-knock properties, which means higher-octane gasoline should be used.

[LiamAnn]

Last time I lent my Tharu to a friend, and when it was returned, I found out they filled it with 92-octane gas. I was so worried. I called the 4S店 technician, and he said using it once in a while isn’t a big deal, but never use it long-term. The Tharu’s engine has a high compression ratio and needs 95-octane to perform at its best. 92-octane has poor anti-knock properties, which can easily cause engine knocking. Over time, the pistons and cylinders will wear out faster. Now I’m keeping an eye on the fuel gauge, waiting for the low-fuel light to come on so I can hurry and refill with 95. I even bought a bottle of fuel additive to clean the fuel system. Honestly, 92-octane is only a few cents cheaper per liter than 95. If the engine gets damaged, the repair costs would cover years of 95-octane gas—what a huge loss!

[SarahAnn]

As a technician with ten years of experience in repair shops, I've seen many cars with engine failures caused by using the wrong fuel. For turbocharged cars like the Tharu, using 92-octane gasoline most directly leads to knocking. The dashboard won't show a fault light, but you'll hear a metallic knocking sound when accelerating. Long-term use can easily cause spark plug electrode erosion and oxygen sensor poisoning, with the most troublesome issue being severe carbon buildup. We've disassembled EA211 engines that had been running on 92-octane fuel for a long time, and the carbon deposits on the back of the valves looked like a coal mine. I recommend you immediately mix in half a tank of 95-octane fuel to dilute it, and remember to check the spark plugs and combustion chamber condition during your next maintenance.

[ZaneFitz]

Here's how the economics work out: The Tharu has a 55-liter fuel tank, with 95-octane gasoline costing about 0.5 yuan more per liter than 92-octane, resulting in a 27.5 yuan difference per tank. However, using 92-octane may increase fuel consumption by 8%. Based on 8 liters per 100 kilometers, this means burning an extra 0.64 liters per 100 km, costing approximately 5.12 yuan. Over 500 kilometers, the additional fuel cost would be 25.6 yuan, essentially offsetting the price difference. More critically, lower-octane gasoline can reduce engine lifespan, with potential repair costs being dozens of times higher than the fuel price difference. My calculations show that using the wrong fuel increases the probability of major engine repairs by 37% within 100,000 kilometers. No matter how you calculate it, it's just not worth it.