Advice from those over 100k miles

Zangin

Hi. I’ve got a 2102 370z touring with 168.5K miles on it. I bought it with 400 miles on it (used!). Previous owner leased it and decided to trade it in for a BMW 2 weeks after buying it new. Thanks to them, they took the depreciation hit, and I got a great deal on my “new” 370z.

I’ve always used Mobile One Synthetic 10w30 or M1 Synthetic Extended Performance motor oil and filters. Always changed oil every ~7000 miles for the regular synthetic, or ~10k-11K miles when using the Extended Performance oil.

I’ve replaced brake pads once or twice and have had rotors turned once. It’s time for another rotor turning or replacement. Always have used OEM brake parts.

Only other problems I’ve had with car is my horn, and I suspect it’s a loose cable.

I’ve inspected the drive belts every 30k miles or so, and it looks fine so I’ve never replaced it.

Always have run Premium gas.

I did replace transmission fluid at 100K miles (at the dealership).

Car is running fine, should I replace my spark plugs? Most of my driving is highway, and I put an average of 145 miles a weekday on the car. I also sit in my car (quite frequently) while it idles during my lunch (with AC running). About 1 hour a weekday average.

Thanks all!

-Z