many owners ask: if no. 98 and mixed use, so harms the car exactly?
Next, Xiaobian to give you an analysis?
First understand the compression ratio: the so-called compression ratio is the maximum stroke volume of the piston in the cylinder to the minimum stroke volume ratio.
For cars with compression ratios between 8.5 and 9.5, gasoline numbers 92 and 95 are used.
Cars with compression ratios greater than 9.5 should use No. 98 gasoline.
General compression ratio of high automobile engine, large power, high fuel efficiency, but often stability is not high, so the need for better knock resistance gasoline, 98 gasoline compared with 92, 95 gasoline advantage lies in its octane number in the gasoline accounted for a high proportion of fuel knock resistance is good.
The octane number is different, colloquially speaking is to add the anti-knock agent is different, 98 gasoline added the proportion of anti-knock agent than 95, 92 gasoline slightly more.
The quality of the two kinds of gasoline is exactly the same, and the cleanliness has no relationship, the only difference is the amount of anti-knock agent added is different, is designed to adapt to different compression ratio engine for anti-knock value requirements.
Is overall, gasoline mixture, usually refers to a contact by gasoline antiknock index (i.e., octane number), 92, no. 95 gasoline and 98 gasoline strictly cannot mix, but their chemical composition and so on various aspects are close to, physical shock resistance is strong, a mixture of both general will not have what problem, but to ensure the vehicle safety, but it’s best used separately.