Originally Posted By: Neil_A
I have tried the BP and it performed fairly well. Only thing that got me thinking was seeing all these unbranded tankers delivering to BP and other chains, while Mobil has their own clean blue labeled trailers. One thing is for sure my 3800 series III does not like Shell. I have consistantly tried various Shell stations, due to them being the only top tier in my area, and always noticed my fuel economy drops and my engine is slightly rougher on their fuel. Sunoco with 10% ethanol seemed to make my engine idle the smoothest.
When I worked for a independent Exxon retailer in the NY/metro area with several repair shops/gas canopies, we still received some fuel from Exxon-owned delivery trucks/drivers. As the drivers retired out, Exxon started moving more and more deliveries to contract haulers. The gas was exactly same as per invoices, but Exxon realized significant cost savings as they moved to third-party contract-haulers.