● Laozhou asks: Road treasure 7100E, engine east install 465Q-2, use 93 oil at present, say this engine can use 90 oil on the manual, head 90 are used after protecting, the rest is returned in possible gasoline tank 93 a few oil. Can be date and 93 90 benzine mixed use?

3 answer with Zhang Zhengming's master: Use what than engine the design asks expensive grade gas is not affected, benzine grade depends on octane number content, octane number fights cruel sex higher to had been jumped over, compression ratio asks benzine grade is higher greatly more. If use benzine grade to ask under the design, start opportunity generation to deflagrate (flame is noisy) , the benzine with low grade contains lead, colloid content also tower above is very multiple, use lower than engine design requirement grade gas, 3 yuan of sensor of meeting attaint oxygen, catalysis, firebox produces carbon deposit to wait.