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Old 12-11-2018, 11:47 PM   #1 (permalink)
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Join Date: Dec 2012
Location: Pennsylvania
Posts: 488

Grandpa's Caprice (retired) - '84 Chevrolet Caprice Classic
Last 3: 20.76 mpg (US)

Woody - '90 Mercury Grand Marquis Wagon LS
Last 3: 19.57 mpg (US)

F.E. Brick - '99 Chevrolet K2500 Suburban LS
Last 3: 12.94 mpg (US)

Mom's Car - '01 Chevrolet Impala Base
90 day: 20.7 mpg (US)

R.J. - '05 Ford Explorer 4wd
90 day: 19.56 mpg (US)
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2005 Ford Explorer, 4.0 SOHC + 4WD. Stock EPA Figure: 15 Combined.

https://www.fueleconomy.gov/feg/noframes/21392.shtml

I got this at the end of October 2018. The previous (and original) owner purchased a new Explorer and this was intended to be my winter rig; solid frame, "anti deer" bar and new tires (literally; they had under 1k miles on them at purchase.)

Specs at purchase:

Pennzoil 5w30 Conventional Oil
75w-140 Mobil 1 Rear Diff. Oil (More fuel efficient than Amsoil)
Tire PSI: About 30
153k Miles
Thermostat: Unknown. Replaced with a 190 or 192 F thermostat shortly after.

That didn't seem to work well enough (13 - 14 MPG by the computer?) so I pumped the tires to 40 Cold, filled up the tank and drove about 65 miles before putting Amsoil P.I. (Performance Improver) in the tank and driving at high RPMs on the Interstate with the Overdrive off to clean the valves. This might have worked a considerable amount (tire PSI aside) as I don't suppose Rudy ever used injector cleaner.

After a lot of paint touch up work, fluid film coating and partial tanks (during which the computer said I was getting anywhere from 16 - 19 MPG depending on driving) I filled up the tank and put 2 Oz. of RLI Bio-Plus in the tank before filling. I drove on the interstate for about 30 miles and kept the RPMs around 1500 or less at 55 MPH, netting 20.3 HWY before leaving. Ultimately, this tank was 16.7 MPG (and yes, the MPG computer's accurate) but now for some reason I seem to be getting less mileage on GetGo gasoline; who knows why, though.

Next mods (or ideas for mods: )

1: I could remove the roof rack but family politics are reluctant.
2: An Air Dam is fair play if I have time.
3: Fiberglass in the engine bay to keep it insulated? Sure, why not?
4: No reason why I can't use the ScanGauge II in this while the Suburban's sitting around in the garage.
5: I've been thinking of an Electric Fan conversion with a fan for some other vehicle and I've never done this before. I know I need the fan (or fans,) a fan controller and a temperature sensor that I'll put in contact with the Antifreeze and not just stuck in the fins of the radiator.
6: Switch back to the gas station I was using before I got GetGo fuel at 30 cents per gallon less.

- Austin

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Old 12-12-2018, 07:12 PM   #2 (permalink)
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Jeep - '97 Jeep Cherokee Sport
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Take a look at this:
https://www.explorerforum.com/forums...ge-tips.44372/
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Old 08-30-2020, 10:12 PM   #3 (permalink)
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Join Date: Dec 2012
Location: Pennsylvania
Posts: 488

Grandpa's Caprice (retired) - '84 Chevrolet Caprice Classic
Last 3: 20.76 mpg (US)

Woody - '90 Mercury Grand Marquis Wagon LS
Last 3: 19.57 mpg (US)

F.E. Brick - '99 Chevrolet K2500 Suburban LS
Last 3: 12.94 mpg (US)

Mom's Car - '01 Chevrolet Impala Base
90 day: 20.7 mpg (US)

R.J. - '05 Ford Explorer 4wd
90 day: 19.56 mpg (US)
Thanks: 874
Thanked 32 Times in 26 Posts
Quote:
Originally Posted by Taylor95 View Post
Thanks for that, and I did learn about Indexing Spark Plugs there, but Al Franklin seemed to be more about throwing money at his vehicle than using low fruit mods. It's good to know, and there are some interesting mods there. I think I'll pay attention to Funkhoss' 94 Caprice Wagon, and Diesel_Dave's efforts, though

I'll jsut start with low hanging fruit mods, first. I plan to mod it to get at least 25 MPG tank to tank, and I've gotten to 20 recently (a 2.5 to 3 MPG improvement,) mostly thanks to EOCing. I only recently found that I had to set my SG2 engine setting to "Hybrid" to keep it on during EOCs.

I have yet to take the Roof Rack off, and I won't be doing it until the end of this current tank, which I'm somewhere in the middle of.

I had a baseline for this vehicle: about 17 to 17.5 MPG in Summer months, without Hypermiling, in Rural Pennsylvania. Not the best figure, though it did beat stock by a bit due to the tires being set at 45 PSI (Hot.)

Having tried that, I experimented with adding Amsoil Upper Cylinder Lubricant to the Gas at fill-up. On a trip, it did improve the mileage, but not enough to pay for itself; it only raised it by maybe 3/4 of one MPG. I compared the SG2 figure (which was calibrated) to the On-Board figure (which is aaccurate.) That bottle of Amsoil UCL cost me $5. Even if I bought it with the Amsoil discount, it would come out to $3.65. Unless Gas goes up to $5 per gallon here, it's not worth it.

Having considered that, I started putting Opti-Lube XL ("Xtreme Lubricant" Diesel Additive) in the tank, since 1: I had it, 2: it's much cheaper by the ounce, if you buy it by the gallon, and 3: It seems to beat Amsoil in Lubricity, too (if I'm reading the data sheets right.)

Amsoil UCL:

Pump Gas - 807 Ám Wear Scar.
With Amsoil UCL - 640 Wear Scar, a 167 Ám Improvement.
Cost: $3.65 or $5.xx for a 6 Ounce Bottle (1 Treatment)
https://amsoilcontent.com/ams/lit/da...tins/g3657.pdf

Opti-Lube XL:
Pump Diesel - 440 Ám Wear Scar.
With XL at High Treat Rate (Edit: that's 2.5 oz / 10 gallons,) 220 Wear Scar, a 220 Ám Improvement.
Cost: $40.16 per Gallon (not counting shipping,) or $1.8825 per Treatment of 6 Oz per Tank (slightly higher than the 2.5 / 10 gal treat rate.) $1.568 per tank at 5 oz / tank (slightly under the treat rate.)
https://opti-lube.com/downloads/intertektesting.pdf

Based on these two data sheets, Opti-Lube XL should give me a wear scar equivalent of 587 Ám, and it should cost much less. EDIT: I was using 4 Oz, not 5.625 oz per gallon. The wear scar would be higher, but

"XL" is Opti-Lube's best additive for increasing Diesel's Lubricity. I started at 2 oz in a tank, then I raised it to 4. I know that this works to raise lubricity in Diesel, and it may work better in Gasoline than Amsoil UCL. My concern is, it isn't designed specifically for Gasoline, so I'm concerned for the long term effects on the car. I'm not sure if it's working to raise mileage, but I'm going to put another 4 Oz in at the next fill up. My mileage has improved recently, but I'm not 100% sure why; I've also been improving with my EOCs.

The current tank is looking like it's shaping up to be somewhere around 21.5 MPG, although I'm not done with the tank yet. I didn't start the tank out with the SG2 set to "Hybrid," so I don't have the most accurate figure.

EDIT: That tank ended up being 20.21 MPG.
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Old 08-31-2020, 08:19 PM   #4 (permalink)
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Join Date: Dec 2012
Location: Pennsylvania
Posts: 488

Grandpa's Caprice (retired) - '84 Chevrolet Caprice Classic
Last 3: 20.76 mpg (US)

Woody - '90 Mercury Grand Marquis Wagon LS
Last 3: 19.57 mpg (US)

F.E. Brick - '99 Chevrolet K2500 Suburban LS
Last 3: 12.94 mpg (US)

Mom's Car - '01 Chevrolet Impala Base
90 day: 20.7 mpg (US)

R.J. - '05 Ford Explorer 4wd
90 day: 19.56 mpg (US)
Thanks: 874
Thanked 32 Times in 26 Posts
Wow. I just got 25.8 (or a bit higher?) on a return trip of 32 or 33.8 miles (google maps tells a higher story than the computer.) Most of it was just because I was driving slow on a highway, and EOCing. That's not even with any big mods done to the car, and it still has the roof rack on. The EPA HWY figure is 18 MPG.
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Old 09-05-2020, 09:26 AM   #5 (permalink)
Master EcoModder
 
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Join Date: Dec 2012
Location: Pennsylvania
Posts: 488

Grandpa's Caprice (retired) - '84 Chevrolet Caprice Classic
Last 3: 20.76 mpg (US)

Woody - '90 Mercury Grand Marquis Wagon LS
Last 3: 19.57 mpg (US)

F.E. Brick - '99 Chevrolet K2500 Suburban LS
Last 3: 12.94 mpg (US)

Mom's Car - '01 Chevrolet Impala Base
90 day: 20.7 mpg (US)

R.J. - '05 Ford Explorer 4wd
90 day: 19.56 mpg (US)
Thanks: 874
Thanked 32 Times in 26 Posts
Since I learned that I could set my ScanGauge II to "Hybrid" to keep the meter on during engine-off coasts, I'm sure that helped my mileage; I think I'm getting better at EOCing. It also allows me to have two average gauges. 1: The On-Board computer, which I use for the overall average; 2: the SG2, which I'm using for the trip average. I haven't re-calibrated the SG2, but it's close. I've been making logs of trips for the last few tanks.

I re-filled yesterday, and netted 20.2 MPG. These last 3 tanks (all with Opti-Lube XL) were 20.3, 20.07, and 20.2 MPG. I'm still not sure if the Opti-Lube additive is helping much. Because I've been getting better at EOCing, that may account for the mileage being just over 20 MPG now.

When I filled up the tank yesterday, I also added 24 Oz (3/4 of a bottle) of Marvel Mystery Oil to the crankcase; the oil was a bit low, and I'm near oil change time. My overall average has increased over the last 83 miles to 21.5, but that's just over one day, and the engine had already been at 195 F when I filled the tank. I'm not surprised about a mileage increase, since the oil's thinner now; I also saw oil viscosity-dependent mileage differences when I was trying different oils in the Suburban.

Yesterday, I picked up a cheap tarp, to use as a grill block. It's not attached yet. I also picked up some silicone, for the roof rack delete. I'll probably make these changes before this tank's over, and then I'll change the oil maybe mid-tank or at the end of the tank.

EDIT: I removed the Roof Rack today. The bolts are still in the roof. After I sanded the rust off the bolt inserts and cleaned the roof, I put Silicone on the bolts to keep water out. I haven't driven the car yet.

EDIT 2: That tank, with the MMO in the crankcase for the whole tank and with the roof rack off for 353.2 of 437.1 miles, turned out to be a 20.62 MPG Tank.
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Old 09-15-2020, 02:23 PM   #6 (permalink)
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If you pump your tires up to 55F/52R you should get about a 3-4% bump in FE and it will handle better. Just did this on my ranger. Now I don't bounce off potholes and can turn sharper.
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Old 09-15-2020, 02:33 PM   #7 (permalink)
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Is your Explorer a manual? EOCing in an automatic could damage the transmission.

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