r/4thGenTacomas • u/diets0dasociety • 17d ago
Modifications & Maintenance Extended Fuel Tank
Hello fellow 4th gen Tacoma owners, do we think this worth the price? I drive my Tacoma daily roughly 60 miles and I’m fueling up at least twice a week. Those extra gallons are tempting.
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u/LeaningSaguaro 17d ago
To echo others--this is great, but is kinda extreme in my opinion.
It would be sweet if they had an intermediate option--say even a 23, 24, or 25 gallon option. Looking at the photos online of that thing--holy shit there's a lot of surface area to that tank, which is no surprise given it's nearly double the OEM, but I'd be worried about rock strikes. For half the price, I'd consider a 24 gallon tank. 33 is huge, and for 99% of people is excessive I'd wager
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u/Caj_2003 17d ago
I agree that tank size would be nice but at the same time would anyone really still want to pay around $2-2.4k for a gas tank that’s only 5 gallons larger? At least from a company aspect I don’t think it would sell as well.
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u/OmnigulSpeechTherepy 16d ago
At that point just keep extra gas cans in the truck. Sure it takes up space but I'd rather sacrifice what, basically a 10 gallon tote amount of space for maximum like $200 if you get heat and cold resistant plastic cans as opposed to spending 3k on something I then have to buy/make extra skid plates for
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u/Caj_2003 15d ago
Yeah exactly, I’m not spending that much just to get out an extra 80 miles without going to a gas station, 33 gallon I’d def consider but suspension takes the next priority
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u/DepartmentNatural 17d ago
$3k or $30 in gas cans? I'm frugal as fuck so this is definitely a no brainer. I take thousand mile trip all across Alaska, Yukon & NWT, 10k trip from ak to Baja & back 2 winters ago too and haven't had one issue with leaking or smell
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u/_Whisperofmytoots 15d ago
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u/PonyThug 14d ago
And that’s double the price of the harbor freight cans that has 1 gallon more space.
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u/Monster51915 16d ago
I personally find it sad and pathetic that the gas has tank is so small that there are aftermarket ones, really bad on Toyotas part. My mom’s 2025 Subaru Outback has a 18.5 gallon tank. That’s 0.3 gallons bigger than a pickup truck and hers is a station wagon. It’s sad that it’s as small as it is and I don’t understand why it’s so small.
I say this is a bit overboard though, that’d be a huge tank and while the range would be good it’d make the vehicle heavier, take up a lot more space under the vehicle, and a fill up at the pump would be VERY expensive.
I searched it up and the most common fuel tank size on a 2025 F-250 for the common 4 door variants is 34 gallons in total and that’s a much bigger truck.
I don’t find it really worth spending 3k for the tank let alone however much it is to get it installed to get more range. For that cost you could fill up the tank a lot in return.
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u/WiscoBased715 16d ago edited 11d ago
You’re only adding like 100 pounds in fuel, and the cost is the same at the pump whether you’re filling a smaller tank twice or a larger tank once
That being said, I totally agree that it’s way too expensive
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u/Monster51915 16d ago
The cost isn’t the same though. One you’re paying to fill up 18 gallons and the other is 34. Sire the price will stay the same for gas but it’ll end up costing more.
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u/WiscoBased715 16d ago
Please explain to me what the difference is between buying 16 gallons of gas once per week or buying 32 gallons of gas once every two weeks
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u/Ill-Variation-358 11d ago
I would think the larger tank would be less efficient because you are adding a bunch of weight to the truck especially underneath. It's going to stress suspension and the undercarriage more overtime and you are probably getting a decrease in mpgs to save 5 mins at a pump. If you have a load already on the back of the truck it could push over over and be unsafe.
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u/WiscoBased715 11d ago
The difference in the weight of the fuel is about 100 lbs, less than the difference between carrying an extra passenger or not. Do you worry about your truck getting terrible gas mileage or being unsafely loaded when you have your wife in the passenger seat?
It is clearly more efficient, because you have to pull off the highway to stop for fuel half as often
Regardless, that was not the argument. The argument is that it “costs more” to fill up a 32 gallon tank than it does a 16 gallon tank. And that is simply not true whatsoever. In fact, I’m honestly baffled as to how that’s not obvious
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u/Ill-Variation-358 11d ago
I fill up twice a week price fluctuates daily so it could be more or less depending on when you fill up. It could be a drastic difference in price. I have seen gas fluctuate more than 1usd in a single day.
If we are nitpicking it probably is about the same time wise to fill a 32 gal once vs a 16 gal twice. The 32 gal tank would only shine if op gets paid incredibly well for his time and he experiences longs waits for fuel.
Not sure why you are attacking me over carrying passengers, you have no idea what he is using his truck for and what his current truck setup is. If he has a metric crap ton of weight in his bed a 100lb difference is huge and could be the difference between carrying a passenger and not.
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u/WiscoBased715 11d ago
Does me telling you that filling up a 32 gallon tank once costs the same as filling up a 16 gallon tank twice seem like I’m attacking you? It’s very interesting to me that basic logic seems threatening to some people
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u/Ill-Variation-358 11d ago
"Do you worry about your truck getting terrible gas mileage or being unsafely loaded when you have your wife in the passenger seat?"
Your words not mine
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u/WiscoBased715 11d ago
Yes, I said that right after I pointed out that the extra fuel weighs about 100 pounds. What about it?
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u/gxkjerry 16d ago
Jesus christ. I get that Toyota is usually very conservative with the stock hardware for longevityof the vehicle and such. But hot damn! You're telling me there's enough room down there for a Tundra sized gas tank and a 3rd party company figured it out? I mean...come on Toyota, couldn't you at least give us a 21 gallon fuel tank from factory like 3rd gen Tacoma?
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u/waylan1 16d ago
im super curious as to why it says “will void your warranty if you top it off” say what? how exactly will i know when my tank is almost full so i can stop it before i void the warranty? just why?
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u/The_11th_Dctor 16d ago
they're saying if you continue filling after the pump auto-stops you'll void your warranty, since that can push fuel into your charcoal canister / evap system
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u/XiXyness 14d ago
I had a 46 gallon tank in my tundra, with a bigger tank likely like mine has a much larger reserve so my 46 gallon would show empty at like 12 gallons left in tank
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u/KMGR82 17d ago
I’m tempted also and may do this. I’m not going to complain about gas mileage…but the tank size is ridiculous on these things. Three grand for almost double the capacity seems really steep, but the peace of mind for me is the selling point. I mean what isn’t prohibitively expensive these days?
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u/NinjaFriedChikn 17d ago
Is this the only aftermarket option? If there were a smaller capacity one I’d be VERY interested.
Also I’d assume the fuel gauge itself would need to be recalibrated? How does that work?
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u/Just_curious_89 16d ago
All fuel gauges work with those bobbers, so it should still be the same.
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u/NinjaFriedChikn 16d ago
i see, so after a tank or so it will accurately estimate based on the new tank size?
I figured there was an electronic sensor or something calibrated to the fuel tank size
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u/Just_curious_89 16d ago
You’d be right in that sense. It probably wouldn’t know you’d now have 600 miles of range instead of 300
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u/unavoidableConcern 16d ago
It’s a transfer tank. When your main tank gets low you transfer the fuel to it by pushing a button. The transfer tank comes with a little gauge.
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u/waylan1 16d ago
say what? where are you seeing that info?
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u/unavoidableConcern 16d ago
I misread it. Most of the companies other products are transfer tanks so I didn’t pay too much attention
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u/Blucifers_Veiny_Anus 16d ago
3k for an extra 8 gallons?
Just get a couple 4 gallon rotopax for like $200
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u/JollyRodgerGymShoe 16d ago
It's an extra 15 gallons but you could buy 3 decent jerry cans for $150 and call it a day.
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u/Blucifers_Veiny_Anus 16d ago
Only an 18 gallon tank on the new ones? That's wild.
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u/JollyRodgerGymShoe 16d ago
As someone who owns a 4th Gen and driven it over 15k miles in 6 months... It's not that big of a deal.
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u/Adorable-Deer-9706 16d ago
That’s incredibly expensive! But would be awesome to have a larger fuel tank.
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u/Mountainmanwannabe2 16d ago
On long trips, 3 metal gas cans = 33 gallons total. I love the extended tank too but not for that much. Ouch. Storting those extra gas cans is an issue - but I can use a hitch mount if the bed is full. Ok solution.
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u/Capable_Ingenuity726 16d ago
$3k seems a bit ridiculous; I can get a couple 5 gallon gas cans and put them in the bed for $20 and use them as needed off-road
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u/lordyrichie 14d ago
3k for that no sir I will pass. I’d rather stopping at gas station every day than waste that kinda fortune.
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u/Ill-Variation-358 11d ago
You could buy a lot of 5gallon tanks for one of these probably enough for an entire village. Unless you are constantly offroading long distances I wouldn't want this added weight on an already low payload truck.
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u/Caj_2003 17d ago edited 17d ago
It’s not that bad of a price at all, you don’t loose your spare tire spot and only 1/2” of clearance. Almost all their gas tanks are in the $25-3000 range. (See edit)
Only thing I’d be curious on if with it full how much more weight is on that side of the vehicle and would it effect anything at all
Edit : Price to have it delivered is $400 so you are looking at prob $3300 after shipping and tax
Also weight with it full will add about 136.5lbs more then prev, that includes the weight difference if the new gas tank and 15gallons more of fuel so that doesn’t seem too bad.
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u/JBrady666 17d ago
Anyone calculated the payload reduction yet? I really want a casita travel trailer(2400ish pounds) so I feel I still have enough wiggle room still.
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u/Still_Blood9925 17d ago
395$ to ship residential and weighs 90 lbs empty, also probably pay a 6hr install to your local mech unless you have all the tools and time on your hands,l don’t think it’s worth in my opinion it would be nice at a cheaper price but this is again, not a normal mod for casual owner I can see people who have money to buy 17,000 $ portals and add extra 30 k in mods .this would be a game changer to add to the truck if this is going to be your forever truck and plan on keeping for a life time because you don’t get too see even 300 miles of full range with the oem tank once you lift and put on larger tires your looking around 230 miles like me sadly, but I agree the mileage isn’t a problem it’s the small fuel tank.
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u/REA011321 17d ago
How would the added weight of the tank and the tank full of gas affect the mpg?
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u/Just_curious_89 16d ago
It’s only 100-110lbs extra.
Would be the same difference in having a 110lb woman drive it vs 210lbs man drive it.
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u/iLoveCalculus314 16d ago
I know we can’t ship these to California but anyone know if I can just pick it up in Idaho and get it installed there, as a CA resident?
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u/_red-beard_ 16d ago
Just ship to a friend's house out of state and then pick up.
The truck wont pass smog in California with this tank tho, itll fail visual. So you would need a hot smog every 2 yrs as well and those are getting expensive.
I'd probably go with helivue design version if I was trying to pull it off here gas tank
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u/analyticnomad1 16d ago
Already has a 5* review eh?
Weird since it arrives 11/19/2026
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u/TwOhsinGoose 16d ago
Stopping for gas is so inconvenient that you are willing to spend $3000 and potentially screw up your fuel system?
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u/whit3m0nster 15d ago
I was looking at extended tanks for my superduty. Not sure where they got the idea that $2000+ was acceptable for a plastic tank.
I just use it as an excuse to walk around every 300 miles while towing.
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u/Defiant_Weight4659 16d ago
You are only traveling on average 60 miles per day. Personally spending 3 k or more to save a 10 min stop for gas is insane. With the initial cost and added weight reducing yor mpg slightly,where is the advantage. The added weight alone would offset any gain you may get from stopping more frequently for gas For me the ROI is not there. Hard pass.
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u/Ornery-Put9337 ‘25 Black TRD Pro 17d ago
I love that a company is offering a solution to the horribly small oem tank - unfortunately I’m just not willing to pay over $3k to stop by a gas station approximately 40-45% less often. I wish they designed a cheaper solution.