George Perkin's authorizes coupons that are not valid. If you buy the coupon book and try to use the coupon it is of no use.I called to book the appointment on March 24 2009 He will answer the phone and ask you if you are calling with the free coupon, when you say yes he tells you they expire on April 1 2009 and I have done those free oil changes for 6 months and he has no more time for them. I asked if I paid without the coupon, he said he would do it. So he does have the time afterall Maybe he shouldn't produce coupons for hi... read full review »