Redline SI-1 seems to be a forum favorite and there’s a lot of evidence out there that it works as advertised. I’ve never used it before in any vehicle, so I decided to pick up a couple bottles and perform a test of my own. I’m strictly going to be testing whether or not fuel economy is increased by using SI-1.
The test vehicle is my 2015 Ford F150 with a 2.7L Ecoboost, 6R80 automatic and 4WD with 3.55 gears with 104k miles. This truck is turbocharged and direct injected with no dual injection. I’ve occasionally used Techron in the past but it has been more than 10k miles since I last used a bottle. The truck is leveled 2.5” and has slightly larger tires than stock, so fuel economy has never been phenomenal.
I will be using the on-board fuel economy system for comparisons. Over the past 2578 miles, I’ve averaged 13.9 mpg, and that has remained pretty consistent over that time period. When I first bought it, I was getting closer to 15-15.5 mpg, but that was before it was leveled and on larger tires.
I have a 36 gallon tank, and Redline SI-1 claims to treat up to 20 gallons per bottle. Because of the larger tank, I used 2 full bottles of Redline and filled the tank until the pump stopped with 87 Octane E10, same as a I usually use.
I will monitor the fuel economy for the next 3 tanks, and report back with my findings after each tank. This is maybe not the most scientific test, but it should be controlled enough to show whether or not Redline can make a significant impact on fuel economy in a direct injected vehicle. Hopefully someone finds it useful!
The test vehicle is my 2015 Ford F150 with a 2.7L Ecoboost, 6R80 automatic and 4WD with 3.55 gears with 104k miles. This truck is turbocharged and direct injected with no dual injection. I’ve occasionally used Techron in the past but it has been more than 10k miles since I last used a bottle. The truck is leveled 2.5” and has slightly larger tires than stock, so fuel economy has never been phenomenal.
I will be using the on-board fuel economy system for comparisons. Over the past 2578 miles, I’ve averaged 13.9 mpg, and that has remained pretty consistent over that time period. When I first bought it, I was getting closer to 15-15.5 mpg, but that was before it was leveled and on larger tires.
I have a 36 gallon tank, and Redline SI-1 claims to treat up to 20 gallons per bottle. Because of the larger tank, I used 2 full bottles of Redline and filled the tank until the pump stopped with 87 Octane E10, same as a I usually use.
I will monitor the fuel economy for the next 3 tanks, and report back with my findings after each tank. This is maybe not the most scientific test, but it should be controlled enough to show whether or not Redline can make a significant impact on fuel economy in a direct injected vehicle. Hopefully someone finds it useful!
