Fueling Thoughts

[MasterCylinder]

I'm petty about fuel and oil. I like to min/max everything for no reason.

Gas prices are very high right now. I'm seeing $4.89 for 91 octane. Pretty horrendous. So I decided to swap over to ethanol-free 87 octane.

With that ethanol-free 87 octane, I think it would be dumb for me to mix it with AMSOIL Dominator Octane Booster. I received 10 cases for free. What do you all think of this fueling mixture for OEM 2.7L Ecoboost? Sanity check requested.

New Mexico has horrible quality fuel. I've accustripped 14 different gas stations, and all have out-of-spec amounts of water and insolubles (dirt/sand/quartz). I do not have photos.

Being that I only have knowledge of RB engines, and I have typically dealt with 105 RON, I've no experience with U.S. fuel quality.

The key today is "Top Tier" fuels, assuming you can find it, look up for self education.
Per Manual some information:
"Your vehicle operates on regular unleaded
gasoline with a minimum pump (R+M)/2
octane rating of 87.
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. The use of these fuels
could result in engine damage that will not
be covered by the vehicle Warranty
We recommend Top Tier detergent
gasolines, where available to help minimize
engine deposits and maintain optimal
vehicle and engine performance.
For additional information, visit
www.toptiergas.com.
Note: Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuel containing more than 15% ethanol
(E15) or E85 fuel.
• Fuels containing methanol.
• Fuels containing metallic-based
additives, including manganese-based
compounds.
• Fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT).
• Leaded fuel, using leaded fuel is
prohibited by law"
Hope this helps some .

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[BriSco]

 

[superj]

• Leaded fuel, using leaded fuel is
prohibited by law"

i used to have to buy lead additive for a car in high school (1990-1994). but you could get that at the gas station back in the 90s by the stp fuel additive and stuff like that.

and nope, i couldn't find leaded gas anywhere even though it was not officially stopped till 1996. i did notice you could still get leaded gas at airport stations for planes. avgas is leaded (well, low lead) but its terribly expensive. i used to work at a small airport and when we had to drain wing tanks, since we didn't have any way of catching the fuel, we would just drive all the mechanics cars up and fill each on till the tanks were empty. all the muscle car guys ran gutted catalytic converters and loved when we had to do wing work.

 

[MasterCylinder]

I h

i used to have to buy lead additive for a car in high school (1990-1994). but you could get that at the gas station back in the 90s by the stp fuel additive and stuff like that.

and nope, i couldn't find leaded gas anywhere even though it was not officially stopped till 1996. i did notice you could still get leaded gas at airport stations for planes. avgas is leaded (well, low lead) but its terribly expensive. i used to work at a small airport and when we had to drain wing tanks, since we didn't have any way of catching the fuel, we would just drive all the mechanics cars up and fill each on till the tanks were empty. all the muscle car guys ran gutted catalytic converters and loved when we had to do wing work.

I hear that loud and clear. The first bad experience I had during the change over, was a freshly rebuilt engine coming back for loss of power and a slight miss. During investigating the problems, it was the unleaded fuel, because of the loss of leads lubricating properties, the valve seats were being eaten away. Many older engines did not have hardened valve seats, and were ground into the head itself. So a do over was done and heads had hardened valve seats installed. That will stick in your mind forever and not in a good way!

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