Quote:
Originally Posted by Geneticfreak
It's a 2005 4.8is with 200k miles, and the engine is in great shape. We've had it just long enough to fill it up once, and I used 93. I wouldn't think of using 87, but 91 is a confusing number since it really isn't an option (87, 89 or 93 is all you see) Other than my motorcycles that always got 93, my domestic cars and trucks got 87 since they will run on any sludge you put in them.
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Just for grins & giggles...you could do a little experiment for the forum. Just jot down some data so it's not just "seat of the pants" or only subjective. Take note of what your
AVG MPG & AVG MPH (speed) is taking the data from the OBC...or doing your own calculations dividing miles/gallons. Do this using the 93 AKI on a couple tanks of gas.
Then do a switch & fill the tank with 89 AKI to see if you can tell the difference in MPG and available power...again jotting down your AVG MPG & MPH...and note if the performance and MPG is slightly different than the 93 AKI you normally use.
Then do some 1/2 & 1/2 of 89 AKI & 93 AKI which will give you a tank of 91 AKI {this really gives you a tank of 91 AKI fuel (89+93=182) & (182÷2=91)}. Again, take note if the 91 AKI (tank of 1/2 & 1/2) is different than using full on 93 AKI.
Then report back the AVG MPG & MPH you got using 89 AKI, 91 AKI, & 93 AKI. There's nothing like empirical data.
