Owning a car is a steady drip of small bills until something routine catches you off guard. A fresh batch of brake fluid and clean synthetic oil keep your daily drive from turning into an expensive tow truck ride, but paying for them all at once can still sting. The trick is timing these jobs to happen right when you are already at the shop for your state inspection, saving you an extra trip and letting you bundle your labor.
We can usually talk the service desk down a bit on labor if we point out you are doing both jobs together. Once you agree on the price, you still need a way to pay for it without draining your checking account. That is where we can use a card window to spread out the hit.
The 0% window is a deadline, not free money, and any leftover balance when the 18 months are up will get hit with standard interest.