My G37 Sport Coupe has about 40K miles on it; I have changed the transmission fluid once and put in synthetic; I use amsoil synthetic oil; synthetic steering fluid etc.....What else should I be looking to get maintained right now at 40K.

Spark plugs? if so what kind; air filters?; I have a stillen exhaust and aftermarket intake...just wondering what else I should do to the car to keep it in tip top shape.

thanks

 

nah

look up the factory service manual, and change parts only that their recommended interval. You might be surprised to see that these cars need very little. I'm assuming the g37 still comes with iridium plugs, and they should last to 80k.

 

I thought the manual said change the plugs at 100K. That seems like an aweful long time

 

my car had over 100,000 when i had the plugs changed, and was still running great. Actually, after changing the plugs I noticed no difference except my wallet was a little lighter

 

lol. yea, those plugs are expensive, but its made up for with their extremely long service interval. most OE equipment in the industry has switched over to the iridium design.