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I am looking to replace my twin six gallon fuel tanks with something with a larger fuel capacity. I have a 1984 Montauk with a 1990 Evinrude 88 SPL. The engine runs like a champ but of course the fuel efficiency is not the best. I have web searched and found a plethora of tanks form plastic to aluminum. Has anyone used Scepter tanks? Any suggestion on tank replacement would be greatly appreciated. As a side note in the search for new tanks I will in the not to distant future be repowering with a 70hp Yamaha. With that being said fuel economy will be greatly improved.

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Only just saw Scepter tanks yesterday researching tanks for a member. Have no idea of their quality or usability.

While a Moeller 22 or 24 gallon tank under the RPS would be great, when you move to a 4 stroke or DFI, the tank will be a bit too much.

You may want to consider a Moeller high profile 12 gallon. Amazon and Walmart have good prices. Note - Do not be confused with the low profile 12 gallon tank. The dimensions are different and it will not fit under the RPS.

You could also go with a 12 gallon aluminum tank by Mirax
http://miraxfuelproducts.com/new_mira...te_007.htm

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Hi Dolan,
When I had my 1984 Montauk (with a new Yamaha F70), I found it very convenient to have two 12 gallon tanks. While I agree with Phil that your range may be so improved that 24 gallons could be overkill, I found the ability to fill one tank at a time to be quite valuable. Not only did I always have a known 12 gal reserve, but I could take one lighter tank out of the boat at a time to refill.

I don't know anything about the Scepter tanks. I had Mirax, and they worked well for me. Good Luck.

Dennis

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I as well have just come across the Scepter fuel tanks. I saw a 12 gal high profile tank at the local Walmart yesterday. It appears to be a very well constructed roto mold tank. Upon further research it appears there was a co-marketing partnership between Scepter Marine and Moeller Marine that came to an end, effective September 1, 2015. To me this would indicate that the quality would be the same. Would there be any distinct advantage of the Mirax aluminum vs the Scepter or Moeller? I know that one Mirax 12 gal. D-1212 is priced at $240.00. Scepter has a nice selection of fuel tanks. They are available from Amazon.

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if you have the Montauk fuel mats, you want this tank, only.

http://www.ebay.com/itm/Moeller-Tank-...mp;vxp=mtr

But be careful buying, as it may not be being made any longer. The design of these tanks seems to be in flux, and there appears to be three different shapes. Note in this particular offering, they say may not look exactly like photo!

This tank has the square bottom edges which will keep the tank in place on the mats. You may have to hunt around for a couple, but that is what I would buy if you do not want to use the red 24 gallon tank. I would stay away from those white ones. they don't look good in a desert tan color hull, and i hear they are not holding up well color-wise. Also be sure to buy the low profile vented caps. You can get them separately from Moeller for about $12.

Edit:

Just checked the Scepter tanks on line, and they do seem to be making the older Moeller design.

Tank #08190 seems to be the same tank I just recommended. It seems like a great deal at $60. from Walmart

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I just picked up this 12 gal tank at my local Walmart. It is the Scepter p/n 08190. It appears to be well constructed. The cap is what I would consider a low profile, it does not have the castle look to it. The raised bottom pads hold the tank on the deck pad well. The tank does slide under the RPS with no room to spare above the opened vent cap. Should I have any concerns with this?

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There should be a small hole in the rear flat side of the Z legs. It is on the 1/2 way down on the inboard side. This is for a bungie cord to hook on.

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Never noticed this hole. Thank you.

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Don - credit goes to Larry, a.k.a Finnegan.

Most of what I know I learned from other members over the past 15 years of whaler ownership.

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You might want to consider raising the seat 4" or 6". Besides being a HUGE improvement in comfort, it also makes gas tank access and filling easy. The riser blocks fit right into the existing holes in the boat floor.

http://smg.photobucket.com/user/lgolt...=2&o=7

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After looking at the pictures, I believe my solution would be to raise the seat. Then I would not worry about the cap being so close to the bottom..
I found the hole for the bungee on the z frame but mine was located on the front console side. I will load pictures once I determine how to decrease the filesize.

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I raised the Z bracket for the RPS seat one inch on wood blocks. This was the perfect height to provide adequate space above the vented cap.
Located a rope ratchet to secure the tank. The hook attaches in the hole in the front of the z brace then diagonally across tank to the sea dog pad eye between the tank mats. Ready for the extended trip with ample fuel supply.

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You can now look on my personal page to see the before and after pictures. I was able to raise the Z brackets up 1 inch which provided adequate space for the new tank.