Firestone Auto Care offers a synthetic oil change with filter bundled with an electronic battery check for $19.99 via this printable coupon. (Scroll down to view the coupon.) That's tied with our mention from a month ago and the best discount we've seen on this service since January. Note that some restrictions plus a $2.50 filter recycling fee may apply. Deal ends July 11.
There are many ways for seniors to get cheap -- and even free -- entertainment and services.