I have been reading a lot on top tier fuels and noticed that Sunoco was not on the list. Does anyone know how their gasoline stacks up to top tier fuel such as Exxon and BP
Top Tier gas mostly refers to the detergent additives in the gas that prevent buildup on valves and fuel system parts. This can lead to higher emissions and lower performance.
No way to know how a non-top tier gas is relative to them.
Maybe if you had the specific test results and knew when or how many valves stuck, but I doubt that non-top tier gases would release that data.
Originally Posted By: Chuckinator
So there would be no way to know how much detergent was in the fuel from grade to grade or even from one tank to the next?
Sunoco website makes the claim that detergent levels the same across all grades.