Whats this?

[Billabong02]

I was looking through some stuff for my car today and I noticed that on the sticker that came in the window it says under standard equipment included at no extra charge 100K mile engine tune-up. What is this? and what will they do to my car? Will it cost me anything? I'm about to hit 100,000 in the next month. help
thanks

 

[BradE.]

That just means your engine has a 100K tune up interval, ie, plugs and wires. That DOES NOT mean they will tune up your engine at 100K miles for free