Tested: Slippery Mode is best for highest MPG (in Hybrid Maverick)

[GreyCacti]

Why was he banned?

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[jsalewicz]

Why was he banned?

No idea I just saw it on his avatar. Maybe a moderator can give some insight so we don’t go down that way ourselves. Lol.

 

[Zotman]

A request to moderator(s) by me has gone unanswered...

 

[UP-TO-90]

Any updates?

 

[Cancunbadlands]

What about early wear off of the RDU using Sleepery Mod with no rain or snow situation?!

 

[Waterick]

What about early wear off of the RDU using Sleepery Mod with no rain or snow situation?!

This thread was really discussing the modes use for best MPG in the hybrid because it uses a lower level of regen braking. Not advocating it for use on the EcoBoost.
Edit: This also was from before there was an AWD hybrid. So the RDU is not factored in. I would imagine the mode activates the AWD and I don't know how that affects the fuel mileage.

 

[Mavster Mechanic]

Hybrid FWD : I use slippery almost every day.

I love how you can coast almost forever.

Nice glides when you want to glide.
Higher MPG.

 

[Prickly Pear]

Quite a bit of my driving is in traffic (Seattle area) so I am frequently breaking and don't really have a chance to coast unless I am out on the open road. Are you all still using slippery even in stop and go(ish) traffic? When I do I find I am engaging the friction brakes more often to avoid rear-ending someone!

 

[Cherokee]

Slippery in my Eco sends an equal amount of power to all four wheels effectively making the running drive train heavier.
Added RDU wear ? I have not a clue.
But I will continue to only use slippery when climbing steep gravel and on slick snow covered roads.
Low really helps when I’m climbing at 10- 15 mph.
Low gets me above 17-1800 rpm where my Turbo comes into play. This effectively lightens the engine load or at least that’s how it feels.

 

[Mavster Mechanic]

Quite a bit of my driving is in traffic (Seattle area) so I am frequently breaking and don't really have a chance to coast unless I am out on the open road. Are you all still using slippery even in stop and go(ish) traffic? When I do I find I am engaging the friction brakes more often to avoid rear-ending someone!

Yes.

Nearly 100% slippery.
It's the new normal.
Normal feels weird now.

Nice side effect is: teaches you to brake sooner and more gently. My brake lamps are on sooner. Like a few seconds sooner (not milliseconds like LED vs. incandescent).

I rarely use friction brakes.
My pads and rotors are indistinguishable from new after 3 years & 42,000 miles.

 

[UP-TO-90]

I drive in Slippery (as long as I can remember to switch modes). And for all but emergency braking, I exclusively use the "L" low button in the center of the rotary gear selector for slowing down. It's like downshifting to 1st gear in a manual. Works great.

 

[HeyBales]

I drive in Slippery (as long as I can remember to switch modes). And for all but emergency braking, I exclusively use the "L" low button in the center of the rotary gear selector for slowing down. It's like downshifting to 1st gear in a manual. Works great.

Except for no brake light for that fast slow down.

Then again some driving scenarios may not matter for that.

For traffic levels that is - I'm sure drivers are dumb the world around.

 

[Oscarbaron]

Hello folks-

I did a few well controlled tests on my 2022 Hybrid Maverick to explore the features of the different modes. I now drive in slippery mode ALL THE TIME. If top MPG matters to you; maybe you will too.

I have a ScanGauge III attached to the OBDII port and see data in real time from the Maverick's sensors.

On the same road traveling the same direction for all tests with the HV battery between 41.5 and 42.0% for all tests, I got up to 28 MPH, put it in Neutral, coasted to 25 MPH then without touching either pedal, put in back in drive. This was to measure the amount of regenerative charging. I coasted from 25 mph to 15 mph and recorded the results.

Eco Mode: 34A (7.5kW) at 25 MPH
Eco Mode: 15A (3.3kW) at 15 MPH

Tow Mode: 34A (7.5kW) at 25 MPH
Tow Mode: 15A (3.3kW) at 15 MPH

Sport Mode: 34A (7.5kW) at 25 MPH
Sport Mode: 15A (3.3kW) at 15 MPH

Normal Mode: 22A (4.8kW) at 25 MPH
Normal Mode: 10A (2.2kW) at 15 MPH

Slippery Mode: 12A (2.6kW) at 25 MPH
Slippery Mode: 3A (0.66kW) at 15 MPH

Slippery is best if you want to coast the longest distance without using fuel.
Slippery has given me +10 MPG over Eco in slow rolling conditions such as California freeways at rush hour.

Other observations:
Normal, Eco, Slippery allow EV driving.

Tow/Haul and Sport DO NOT allow EV driving, but will "idle stop" while you are not moving.

Normal, Eco, Slippery modes force the gas engine on when the battery drops below 30% state of charge.

Tow and Sport modes I could not get the battery to 30% because the engine was always running!

There is hysteresis in charging. Sometimes.

In Normal, Eco, Slippery it can start and stop the engine at any battery percent down to 30.01%. Once you hit 30% and below (can briefly hit 29% for example) then the engine must run until the battery exceeds 40%.

In Normal, Eco, and Slippery the HV battery likes to stay in the 30's and 40's for percents. Rarely over 50% SOC. Almost never over 55%.

In Tow/Haul and Sport modes the battery quickly charges to 70%! Presumably so you have more juice at the ready for hill climbing, and presumably, drag racing.

Beware- from 30% to 70% you have full regen braking from the brake pedal, which is 145 Amps (32 kW). At 70.2% my regen brake limit went from 32 kW to 7 kW in one step. Surprised me it wasn't a taper, but this was day one of data collecting.

-John

Would you be an engineer by chance?

 

[UP-TO-90]

Except for no brake light for that fast slow down.

I kind of like that I am constantly teaching a lesson to tailgaters but there is that risk.

 

[Waterick]

Still no posts here by anyone with a'25 AWD hybrid. Maybe it's hard to notice any difference in MPG'S. I would think the experience would be similar, however. (IE better coasting/lower Regen). And yes, I also would think that for wear and tear on rear components that it is not a good idea to use slippery as your daily driving mode. Maybe this is why no one knows if it yields better mileage.

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