I showed up to the business, I was pleasantly greeted and offered a bottle of water. The service was quick and complete. They quoted a price of $62.99 for synthetic blend, I had a $10 coupon so my price should have been $52.99 plus tax. But they filled my car with full synthetic, telling me it was because they were out of the blend. He took $20.00 off to bring the price to $62.99 but what about my $10 off?! off!? ref=== They