I have a 2019 200hp mercury 8 cylinder 4 stroke pro xs
On a 19 foot ranger
I am getting a 2 miles to a gallon
Is this normal for this engine
My optimax would get 4 to 5 miles per gallon in the same day of fishing
I have a 2019 200hp mercury 8 cylinder 4 stroke pro xs
On a 19 foot ranger
I am getting a 2 miles to a gallon
Is this normal for this engine
My optimax would get 4 to 5 miles per gallon in the same day of fishing
Need to provide engine serial number at minimum, some of the other data mentioned in this announcement may also help the pros in responding to your question - Please Read BEFORE Posting
_______
Phil
'09 Hewescraft ProV
'09 150 Optimax
here is what i have noticed on mine...and i did a direct repower, so its pretty easy to see the difference...
the new 4 stroke if trimmed out and just cruising, say +/- 4500-4800, i would say is just as good as the 2 stroke optimax...
however the WOT, i feel the 4stroke does consume a tad more...
however i would NEVER look back....
love my 4stroke pro xs...
Sterling 22XS / Mercury Pro XS V8
Yeah that serial number is required, even for the most general type questions. Just helping Don out.
If you would, please take a moment to review the Announcements, and provide the Required info with your post. Thanks!Originally Posted by 2326kevin
Mid range and cruising should be comparable... WOT operation will likely require more fuel (it is a larger displacement engine, and a fourstroke).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
You're not the first one I've heard about not getting very impressive fuel economy numbers, know a guy with almost the same motor that isn't getting near as good as his optimax did.
1995 Allison XB-2003 225 Super Mag. It's slow and I'm ok with that.
10-15 % worse for me on my personal boat and I dont typically run it hard...
I'm getting noticeably better. 225 optimax to 200 pro xs 4 strk .
2mpg is garbage and something is wrong.. I cant get 2 mpg. even towing a tube with 5 on board I'm still 3-4mpg. I have 20 ft nitro fish ski. can cruise at 6 + mpg and 4.25mpg @ 50 mph 3.2mpg WFO. wide open full neg trim I'll see 2.8 mpg but opti would be same .
engine isnt capable of burning over 20 gallons per hour . so unless you topping out low 50s your math is off.
Last edited by 12many; 11-19-2019 at 11:11 PM.
2023 triton allure
I went from a 17 boat to the exact same 19 boat with the new motor. It’s worse, quite a bit at WOT. But I still would not switch back. Not a chance
Ryan Bauman 2024 Puma STS 250 Mercury ProXS Fourstroke
Easy to say when there is no chance/choice.
Admittedly- it's really hard to beat or compare the fuel economy of the Optimax models. Given that power was produced on every rotation of the flywheel, and fuel was directly injected into the cylinder at precisely the best time for efficiency, they were (and remain) a marvelous engine.
That being said... eliminating the constant feed of oil, continuing emissions improvements, adding significant control feature improvements, while building a light, powerful and DURABLE 4-stroke Platform did have a couple trade-offs (very few, but higher RPM fuel economy is one of them).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
I don't think DURABLE has been proven yet.
Fished 3 tournaments averaging 17 gallons per tourney
running hard 8 hour tournament . Filled up right after each tourney .
250 four stroke
I would burn 22 to 25 gallons on 250 2 stroke in the same tourney.
The four stroke blows the 2 stroke away.
10-15% Worse for me, but no looking back! I'm pleased with my V8!
As seen here, a decrease in mileage at WOT is expected but you seem to be doing worse.
To be a real comparison, you'd have to have very accurate fuel usage data and you'd have to ensure both motors, especially the new one, had an optimal setup. If you're new motor is not set up well and not propped right, you could be bogging down from to high pitch, or not reaching full top speed due to a prop that is too small. Keep in mind, speed will affect MPH. If you're burning constant X gallons per hour, your MPH is less when you travel slower.
Bruce
2019 20 TRX Patriot
Mercury 250 ProXS Fourstroke
HDS 12 Live - Console
HDS 9 Live - Bow
Tough for me to say one way or the other, but I just don't notice the diff. if were getting 4mpg with an optimax, 10% is only .4 mpg. Unless your really putting in some miles most would not notice that. Seem to remember the optimax still got sub 3 at WOT.
Bryan McDonough
2023 Nitro Z21 XL
Nitro Team
Assuming you're talking about an opti. If so, something was really wrong with it! I haven't seen 1 application where I replaced an opti with a 4s and seen better economy
Last edited by 21xTriton05; 11-23-2019 at 01:02 PM.
I didnt sleep at a holiday in last night, but shoudnt a four stroke use 1/2 the fuel of a 2 stroke giving that a 2 stroke takes fuel every stroke, as to where a 4 stroke takes the fuel every other stroke?? That being said for the RPM the 4 strokes seem to be turning higher RPM so it should be a wash. I would assume that the four stroke also direct the correct amount of fuel at the given time to make the most horse power. Just asking here as I like the sound of the merc four stroke. I have ran four strokes since 1984.
More cubes and 2 more cylinders to feed i could see where they could burn a little more especially at wot. All ive ever owned are v8s in my vehicles and i dont own them for their fuel mileage lol
Roy
2020 Triton 18 Trx
Mercury 200 Pro XS V8
Bravo FS 24P Prop
Atlas 6” jp
Dual Humminbird Helix 10 MEGA SI
Minnkota Ultrex.
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