need advice from you pros
 

Hi

am Disco and I have this 2003 Nissan Maxima for about two years its doing
45k miles now, looks good ands runs good, this is my first car, I am from LI NY
I would like to ask a question, I dont know if I should ask it here, or a next page please let me know

I have a pinging from the engine on 25- 30 mph it goes and comes am doing 45k on this car 2003 nissan maxima ever since I got this car two years ago, I have been using 93 octane gas and uses Mobil extended performance oil in the engine, the emissions test is fine. can anyone tell me what can be causing this, every now and again I will use a gas injector cleaner[SEAFOAM] I pour a can of that into the tank and it stops it for a while but
the engine pinging comes back Thanks