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Old 07-21-2010, 06:13 PM
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Default Advice on Ethanol in outboard- how to treat each fillup

whats the rule for protecting against Ethanol in an outboard, i have 130HP 2 Stroke Yamaha and want to know best additives/products to add to tank and when....thanks,
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Old 07-21-2010, 06:26 PM
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STA-BIL seems to be popular here? I used to use PRI-G and switched to STA-BIL myself but dont have enough experiance to comment first hand. I know that using nothing will cost you, a friend spent 1000 bucks replacing all his fuel lines and a carb clean, another spent 700 for the same thing and another needs to buy new gas-lines and i'll help him replace and do carbs (all from fuel-line break down and/or dirty carbs from seperation).
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Old 07-21-2010, 06:28 PM
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Because I have no choice, I've been using E10 for a long time. I have never had a problem. I've read many posts that stated many people had big problems. To answer your question, I add Startron at the recommended rate at each fill up. I also use Ring Free because I run Yamaha ox 66's.
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Old 07-21-2010, 06:33 PM
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I have had zero issues with ''Ethanol Fuel''. I run twin 1999 225 Yamaha OX66's. I run them weekly during the spring and summer and at least once or twice during the winter months here in Florida.

I have noticed a drop in fuel economy since using E-10. It is about .1 to .2 mpg at cruise. I do not use any RingFree or Stabil. I use Walmart oil and now perform a plug change and a de-carb with SeaFoam every 100 hours or so. Before switching from Yamalube to Walmart oil I had to change plugs and do a de-carb every 50 hours or so.

My motors have over 1200 hours and run like champs! Just got back from a 280 mile trip to the Bahamas without a hiccup.
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Old 07-21-2010, 06:41 PM
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The best 2 products out there are "startron" and "sta-bil marine formula". They both perform almost exactly the same, the sta-bil a LITTLE BIT better, but at a higher price. I use startron at every fill-up. It couldn't hurt to use sea foam or ring free as well, as reccomended with all yamaha 2-strokes.
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Old 07-21-2010, 06:44 PM
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Ring free to keep it clean, sta bil or startron for the corngas.
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Old 07-21-2010, 06:51 PM
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My buddy hasnt had a problemb with running ethanol in his salt water sieries 2, but in my hpdis I run sea foam and stabil.
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Old 07-21-2010, 07:03 PM
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There are three things to consider re E-10 and engines. Ring free or Carbon Guard, Sta-bil or Startron and E-Zorb or Seafoam. Each has a purpose. Do a search here and make your own decision. Some say they are all a waste of money and others that they wouldn't leave the dock without one or all. Good luck and if you find the ultimate answere please let us all know. The info on this site is longer than Obama's health plan -but here some have actually read it.
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Old 07-21-2010, 08:18 PM
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I have twin 300 HPDI's and run "Ring-free plus" and also "Ethanol Medic" both engines run perfect and no problems with fuel lines or filters.I also use 87 octane pump gas.
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Old 07-21-2010, 08:55 PM
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Quote:
Originally Posted by signmansez View Post
I have had zero issues with ''Ethanol Fuel''. I run twin 1999 225 Yamaha OX66's. I run them weekly during the spring and summer and at least once or twice during the winter months here in Florida.

I have noticed a drop in fuel economy since using E-10. It is about .1 to .2 mpg at cruise. I do not use any RingFree or Stabil. I use Walmart oil and now perform a plug change and a de-carb with SeaFoam every 100 hours or so. Before switching from Yamalube to Walmart oil I had to change plugs and do a de-carb every 50 hours or so.

My motors have over 1200 hours and run like champs! Just got back from a 280 mile trip to the Bahamas without a hiccup.
Have you had to replace your low pressure fuel pumps?
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Old 07-21-2010, 09:22 PM
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I used Startron with good results. Best bet, try to find some real gas. Many marinas have it. it is a bit more but...
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Old 07-21-2010, 09:53 PM
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I used startron, seafoam and my own vent dessicant filters and had zero problems other than horrible mileage. I'm back on straight gas as of last 2 fills.
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Old 07-21-2010, 10:31 PM
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Quote:
Originally Posted by Danny View Post
Have you had to replace your low pressure fuel pumps?
Had to no, but have I, yes.

Here is a list of regular maintenance parts that I service or replace:

Low volume fuel pumps- 2 times in 600 hours- 3 per motor about $35 each

Thermostats 2 times in 600 hours. 2 per motor

Poppit Valves, clean every hundred hours or so

VST filters again replace 2 in 600 hours 1 per motor

On motor fuel filter 2 in 600 hours 1 per motor

Clean O2 sensors, was every 50 hours until switched oil now every hundred hours

De-Carb procedure was every 50 until switdched oil now every hundred hours

Sprk plugs again was every 50 until switched oil now every hundred

Racors, twice a year

Thats about it. All service done by myself. Basic stuff that can be performed by anyone with a knowledge of basic tools and the ability to read a shop manual.
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Old 07-22-2010, 04:17 AM
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Marvel Mystery Oil (instead of Ring Free), and Sta-bil only if I don't think I'll go through the gas within a three weeks.
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Old 07-22-2010, 04:25 AM
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I use Startron and have for the last couple of years.

Most of the time I get gas at a local station that has ethanol free fuel but sometimes that is not possible however I keep using the startron for insurance.
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Old 07-22-2010, 04:57 AM
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Simon.....The additives turn enzyme corroded fuel lines to mush... you will have problems if you dont neutralize the enzyme reactivity....no matter how much you use your boat. The problem is just beginning. Keep your tanks as empty as possible.. (PER yAMAHA) as opposed to the old school thought prcesses of keeping them full to reduce condensation moisture. Stabil or Star brand enzyme neutralizer is the best. Its like a 3 pack a day smoker...eventually it will catch up with you...
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Old 07-22-2010, 05:40 AM
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You will not get a definite answer on this subject here or anywhere else. You will also get strong opinions. Best advice is read about the subject and make your own decision based on cost/risk/preventative maintenance, etc.

FWIW this is my experience.

I started using Ring Free after learning about it on THT. It is recommended by Yam to remove carbon deposits.

With the intro of E-10, I started using Startron and Stabil Marine formula in addition to RF. Startron to remove any water in the fuel and Stabil to provide corrosion protection should any water be present in the fuel system.

Results -

Using RF alone I used to get carbon floating in the water after a cold start. Combining this with Startron has eliminated this emission. De-carbs are unnecessary and do nothing, so my impression is that carbon build up with this combination is eliminated

When I bought my boat it had water in the tanks. I had to drain the clear bowls on my Racors of the small amount of water that would regularly collect. Since adding Startron & Stabil to each fill up of fuel, all water has been eliminated

I have had no fuel related issues through 2 transitions from gas to E-10

I am strong believer in preventative maintenance and view the small cost of the additives as PM
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Old 07-22-2010, 07:16 AM
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I run two Mercury Verado 275 engines. My marina switched to E10 about a year ago. Based on adivce from marina I ran the non-E10 fuel almost completely out of the tanks and refilled with E10 and added Startron on each fill up.

A few months after switching, I had to have the float sensors replaced in the engines because they were sticking due to the E10. Mercury replaced sensors in both engines with an upgraded part under warranty.

Since that time, I have had to mix ethanol and non-ethanol gas out of necessity. Many marinas in the Bahamas do not carry E10 fuel. I have not had any issues doing this, however I will say that when I do this, the fuel doesn't stay in the tanks more than a couple days. Also, when I am in the Bahamas, I don't fill the tanks all the way up just to keep the weight down. Usually put in a 100 gallons at a time until I get ready to head back. I don't use the Startron with the non-ethanol gas.

I also use the Mercury techron fuel additive on a periodic basis - about 50% of the time.

Other than the float switches - no problems. In addition to the Verado fuel filters, I have a set of Racors. I have examined both sets of filters on periodic basis and have not detected any kind of sludge, varnish, or other type of build up. The boat is 3 years old so I ran non-ethanol for about 2 years in the tanks before switching over.

Last edited by NAUTI BUOYS; 07-22-2010 at 07:29 AM.
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Old 11-09-2010, 09:37 AM
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Default I use Ethanol Medic

I have a 1989 Yamaha 200 i bought a Grady White that had been sitting for a year and a half. I put in Ethanol Medic when i got the boat and now I use Gasoline Marine Medic (same Company, different Product) it contains a carbon reducing formula similar to ring free, unlike ring free, the GMM treats 375 gallons for under 30 bucks, and it's a lot cheaper than non ethanol gas per gallon. This stuff really works
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Old 11-17-2010, 09:13 PM
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I've used Stabil for 20 years. I know it works because I have several motors (generator, tiller, 6 hp outboard) that run once or twice a year and I have never gummed up a carb since using Stabil. I've used stabilized 2 year old gas in my generator, mower, and tiller with no problems. I stockpile gas for hurricane season every spring and then run it in my mowers the next spring. Try that without fuel stabilizer and I promise you will have problems. I rebuilt too many carburetors before I started using Stabil.

I would assume Stabil for ethanol is a good product.
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