Inquiry (采购产品): engine oil analysis Hello, i recently had my engine oil changed with synthetic oil and two days later took it to a different dealership to have my radio looked at. Well, the service girl made a mistake..and when my vehicle was done...I was presented with a bill for an oil change(petroleum base)? Well, yes, I very much questioned it..explaining that I had just had the oil changed with synthetic oil.(now..and in the future I will remember not to say so much) Well, the servic rep... then went into the back and spoke with the mechanic. ...He came back out and said that the mechanic had noticed the oil was fresh and didn't change it. Hmmm??? ...I have serious doubts..thus ... Can I bring a few drops of my engine oil over and just have a test to see if it is petroleum base or synthetic? If so...how much? Thank you, Randy Sammons 724.864.2719 rsammons4@comcast.net **** Hidden Message ***** Randy Sammons 115 Northumberland Drive Irwin, PA 15642 USA Company: ..just an individual Phone: 724.864.2719 E-mail: rsammons4@comcast.net **** Hidden Message ***** rsammons4@comcast.net