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i have just got a 1980 colt 5door 1.4 auto and would like to know if this car needs to run on leaded petrol or if unleaded is ok. it is having a little problem at the mo and would like to rule this out as the cause.
 

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I dont know but if you have the owners manual it should say in that,and sometimes inside fuel flap it will state it there too.
 

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if the engine code is 4G12, than the engine is suitable for unleaded petrol, so you don't have 2 look for leaded petrol. if theres another engine on your car, reply me with the engine code, and i ll try to give you an answer.

ps. minimum octane rating for 4G12 is 91RON
this information is obtained from autodata 2004, ver 5.373

yours trully, [email protected]$$u :)
 

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i have had an 80 in the past and now drive an 84 and they both run fine on unleaded. whats the problem i might be able to help you out?
 
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