They (Ford dealer service center) had $26.95 oil change coupon. I asked whether they use Synthetic blend since that is what is specified in my manual. They said "Yeah, I think you mean 5W 20, right? We use whatever is specified by the factory". So I naively believed they would use synthetic blend. The reasons I believed so were (1) Some other local Ford dealers had $25~$30 oil change and they also said they use synthetic blend. (2) 5W20 weight was not popular on the shelf of Schucks auto parts shop and I saw synthetic one only in one occasion, so I again naively thought that 5W20 usually comes in either synthetic blend or synthetic.
After the service, I noticed that they did not specifiy the oil type on the receipt, so asked and found that they used normal
5W20. In a sense they lied to me when they said they would use the factory specified oil type. The service advisor would not redo or refund me. Any suggestion to resolve this wisely? This is a Ford dealer, so I hope I have many options.Thank you in advance!