OMC Autoblend fuel can

[~Nickolas~]

Hi folks,
I recently got another boat and it came with an older metal can. I didn't pay much attention to it but noticed it had Autoblend on the side of it. I realized this isn't an ordinary can and has a seperate oil tank in it to well, Autoblend the mixture. I have never seen one of these until now. It needs to be cleaned out but looks to be in good shape. It says on top only for motors running 100:1 mixture. The motor has a sticker on the side of it above the fuel connector that also says 100:1. I don't think this ratio was used for long so this can has to be an oddball I would think. I wonder if there is a way to adjust it to 50:1? I think it's pretty neat and I may use it but I need to clean it out. Any ideas on what to use to clean it out real good? It has set for a few year with oil and gas in it and has chunks of oil in it. It needs a real good cleaning and the rest of it looks good.

 

[Cap'n Chaos]

Re: OMC Autoblend fuel can

Cool tank... I've never seen that before.

I've read about people using lots of things to clean gunk from tanks... some type of solvent with nuts and bolts and shaking was one.

I know I used to use something in old motorcycle tanks similar to diluted muratic acid....but I cannot remember exactly what acid it was.

 

[~Nickolas~]

Re: OMC Autoblend fuel can

Cool tank... I've never seen that before.

I've read about people using lots of things to clean gunk from tanks... some type of solvent with nuts and bolts and shaking was one.

I know I used to use something in old motorcycle tanks similar to diluted muratic acid....but I cannot remember exactly what acid it was.

I've used Muratic acid before and that stuff is wicked. Accidentally leaned over the bottle and inhaled the fumes and it tool my breath away man and made me gag. I also spilled some on the floor and it started smoking. That stuff is nothing to mess around with. I would rather use something else and leave that stuff be but thanks for the info...

 

[clanton]

Re: OMC Autoblend fuel can

There were kits to convert to 50-1, engines and tanks still in warrenty, were change to 50-1 under warrenty.

 

[Cap'n Chaos]

Re: OMC Autoblend fuel can

Muratic acid is very strong... it must be diluted first.

 

[HighTrim]

Re: OMC Autoblend fuel can

Plain old ammonia with nuts n bolts added works well. A super product is Castrol Super Clean, but it is not cheap.

Never use 100:1, big mistake by OMC back in the day. Just premix your fuel, dont trust that can.

 

[tx1961whaler]

Re: OMC Autoblend fuel can

^^^^^^ +2
Premix at 50:1
The Autoblend can was a bad idea when it came out.

 

[boobie]

Re: OMC Autoblend fuel can

OMC made a kit to get rid of the accumix part of it to convert it to 50:1. 174803. Probably now NLA. If it was my tank I wouldn't mess with it and get a new plastic one from Walmart or West marine. They were nothing but trouble with the oiling feature.

 

[~Nickolas~]

Re: OMC Autoblend fuel can

OMC made a kit to get rid of the accumix part of it to convert it to 50:1. 174803. Probably now NLA. If it was my tank I wouldn't mess with it and get a new plastic one from Walmart or West marine. They were nothing but trouble with the oiling feature.

Thanks for the info. I actually found a complete unused kit new in the box I just purchased. I am going to clean out the can real good and convert it over and see how she works. If it does great if my motor blows no big deal I can pick up another powerhead of ebay. I rebuild motors all the time so it doesn't bother me to try things out and see how they work. I know a lot of guys are just turn key and drive their boat and turn it off and park it without doing much to their own boats and paying to get it fixed but thats not me. I have been a mechanic for years and love tearing into motors and repairing them so that;s why I don't have any issues with doing things most boaters would not do. Power heads on ebay are cheap to a certain extent with the lower horsepower motors and replacing a power head is a breeze so I don't mind experimenting a bit.
I ran Amsoil at 100:1 for a season and liked the results I got. The motor was a lot easier to start and ran very smooth and I am heavy on the throttle so it held up just fine. Most boaters wouldn't think of running at this ratio but most boaters I know don't work on their motors either they pay for maintenance. I do all of my own work and love tearing into a motor and repairing whatever the problem is so thats why it doesn't bother me to try different things here and there. I don't like the idea of running at 100:1 but I did for a season and didn't have any problems I know of. I run the hell out of my motors too so it did it's job. I feel much better at 50:1 so I'll stay there and feel at ease when the motor is screaming at 6K. Anyway I appreciate all the input on the subject.

Nick

 

[HighTrim]

Re: OMC Autoblend fuel can

Just because you got through a season at 100:1 does not justify it in any way nor does it mean that the internals have not severly weakened/wore from it. Being a mechanic you should understand that. Almost all the guys on here work on their own motors, that is the idea behind the forum.

Im sorry, but just because Im capable of rebuilding a powerhead would not lead me to experimenting with proven disasterous ratios.

Just my 2 cents worth.

 

[O'Riley]

Re: OMC Autoblend fuel can

Never use 100:1, big mistake by OMC back in the day. Just premix your fuel, dont trust that can.

Jesus Louise, you guys are scaring me. My 87 15hp came with the accumix tank. Luckly it didn't last long (leaked oil into the gas) and after the second fix I bought a regular tank. To be on the safe side I mixed it a little less than 100:1 but not 50:1 for sure.

I use Cabelas semi-synthetic TCW-3 oil. Most fishing is a quick run to the super secret spot then trolling mostly and back.

So, mix it 50:1 will make me and the motor happy?

Thanks once again!

 

[boobie]

Re: OMC Autoblend fuel can

Mix it 50:1 and both you and your mtr will be happy.

 

[~Nickolas~]

Re: OMC Autoblend fuel can

Just because you got through a season at 100:1 does not justify it in any way nor does it mean that the internals have not severly weakened/wore from it. Being a mechanic you should understand that. Almost all the guys on here work on their own motors, that is the idea behind the forum.

Im sorry, but just because Im capable of rebuilding a powerhead would not lead me to experimenting with proven disasterous ratios.

Just my 2 cents worth.

You know if people didn't experiment we wouldn't be doing a lot of the things we do today. You have to experiment every now and then to see what happens. I personally really don't care if my motor blows I am willing to take that chance just to see how well this oil really works at 100:1. Powerheads are cheap on ebay I have already bought a few and they didn't break me. A lot of people are plain lazy too and don't want to do anything but turn the key and just change the oil or plugs even if they do that. I am always tearing into something it's just the mechanical side of me I have to experiment here and there. I like how the motor responds to the 100:1 ratio myself and will continue to run it at this ratio. I have talked to several old timers that used to race back in the day and they ran their race motors at this ratio with no problem season after season. You can't always believe what you hear either and a company may not advertise one way because of possible trouble so they stick with the old standard that will not cause problems. However a motor will run just fine at 100:1 as I have been doing it for awhile myself now with no disasterous results.

 

[bbstacker1]

Re: OMC Autoblend fuel can

Nickolas, it's your motor do what you want with it. OMC did go to 100:1 for a couple of years then went back to 50:1 because of trouble they were having with the 100:1 ratio, I don't think anyone really believes they would not have stayed with 100:1 if it was not working for them. Most of the people on here like their motors, especially the older models, and will go overboard (error on the rich side) with the oil. I think it pains some of us to hear, what we know in the end is torture to that motor to run it at 100:1. I believe it is a testament to having plenty of oil by looking at how many motors are still running from the 50's and before, that I can think of none of them were 100:1 motors and a great many were friction (non-bearing) motors.

 

[boobie]

Re: OMC Autoblend fuel can

As we were told back in those days those mtrs would run fine on 100:1. BUT, when the customer left them sit for any period of time without fogging them out they would rust up inside and then freeze up. This was due to not enough oil in the mix. I came from a vacation area. The guy that fogged his mtr in the fall of the yr never had a prob, It was the ones who didn't had the probs.