I have an 03 Altima 4 cylinder with 36,000 miles. I'm curious if these plugs need to be changed or if they are the platinum plugs that last up to 100k. Any other service that I should be looking at?

Thanks,

Better than platinum. Iridium. Check out the price. Start saving now. They should last at least 80,000 mi. Inspect brake pads and keep the tires properly inflated. Maintain the cooling system at 50/50 antifreeze and water.

are they the original plugs? if they are, then it's about time to change them if you've never changed them before