Too much gas for oil

[Tom Dunlap]

Last week when it was time to mix up the saw gas the oil container for the 50:1 mix was put in the gas jug. Two and a half gallons are supposed to be used. Three gallons were put in.

Now I'm stuck.

Do I do the calculations to see how much more oil I need to put in to make the thinned, three gallons of mix, to give the right ratio or dump the mis-mix in the van and burn it up. Before I get out the calculator, does anyone know how much more oil I would add to bring the mix up to the correct ratio?

If I open an oil container that means I have to keep track and see how much this partial container will make. Certainly less than the normal 2.5 gallons.

Thanks,

Tom

 

[ricksvar]

Just add 1.3 oz of oil to what you have(3 gallon),that will give you a 50:1 ratio.

You would mix 2.5 gallons of gas with 6.5 oz of oil to get a 50:1 ration.With 3 gallons you should mix 7.8 oz of oil for a 50:1 ratio.

If you don't add the oil you'll be running your saws at 59:1.

Rick

 

[mbopp]

Lets see - 128 oz per gallon X 3 gal = 384 oz. of gas. If you used 6.4 oz of oil (for 2-1/2 gal. of fuel), you have a 60:1 ratio now.

If you add 2.6 more oz of oil ( a bottle for a 1 gal mix), you now have 9 oz of oil total or a 42.67:1 mix. Close enough?

 

[Kneejerk Bombas]

How about adding 2 gallons more gas and another oil bottle, to make 5 gallons of mix? That'll solve all your problems.

 

[Stumper]

Tom, You were kidding right? 1.3 oz of oil is of course the right answer to get 50/1.

 

[Fish]

Just pour it in the truck and start over.

 

[stihltech]

mix

I'll bet nothing happens.

 

[geofore]

mixup

You don't dump it in the van, good way to foul up your emi$$ions, oxygen $ensor and plug$, you put it in the gas powered chipper that doesn't have emissions controls or you add two ounces of oil and call it close enough, everyone can go to work now. 50:1 is idea and the saws won't die at 40 something to 1.

 

[xander9727]

If giving the choice of too much or too little I'd always choose to much.

 

[Bill G]

Re: mixup

Originally posted by geofore
You don't dump it in the van, good way to foul up your emi$$ions, oxygen $ensor and plug$, you put it in the gas powered chipper that doesn't have emissions controls or you add two ounces of oil and call it close enough, everyone can go to work now. 50:1 is idea and the saws won't die at 40 something to 1.

Geofore,

Well if you calculate that out it would be a 400:1 ratio. Do you honestly think that is goig to affect your engine ? If so I sure hope you never use a STP or simalr fuel injector cleaner. Also dont ever put Heet in your tank. I have ran used mixed gas in engines when it has either gotton old or when the truck tank is empty and the fuel can is not. After 150,000 miles and no sensors being replaced I guess I will take my chances on occcasion.

Bill

 

[Bill G]

Darn I should have proofread that post.

Lets count the mistakes

going instead of "goig"
similar instead of "simalr"
don't instead of "dont"
I have used mix gas not "ran used mix gas"
gotten instead of "gotton"

Heck there are probably more

Bill

 

[bwalker]

You guys need to invest $3 in a ratio rite cup. Then you can mix any amount of fuel you want.

 

[Lumberjack]

Originally posted by Bill G
Darn I should have proofread that post.

Lets count the mistakes

going instead of "goig"
similar instead of "simalr"
don't instead of "dont"
I have used mix gas not "ran used mix gas"
gotten instead of "gotton"

Heck there are probably more

Bill

You can click edit and take them out after you posted. I do it all the time.


Carl

 

[Tom Dunlap]

If it were summer I would follow MM's advice and have five gallons of mix around. Not this time of year though.

If I dump the gas it will go into the sixty gallon tank on the chip truck that gets 6 mpg. That should dilute the oil a lot. Since that engine is a four barrel Chivvy 350 with no emission gear, it will be fine.

If I decide to add some oil I'll keep the opened oil container in a ziplock bag to keep from making up another messed up batch.

The thing I do know is that I have enough gas to get through tomorrow. Then I'm gone for a while so mixed gas will not be on my radar screen.

Thanks for all of the hints. Especially saving me the time to work out the shot and a half.

Tom

 

[geofore]

BillG

I was under the impression he already had mixxed it for 50:1 for 2 1/2 gallon and needed to know how much more to add because he had 3 gallons of gas in the can, not 2 1/2. If it's already mixxed 50:1 for 2 1/2 gallons. Three gallons, that's 64ozs of gas over, one ounce of oil in 50ozs of gas leaves you 14oz of gas not covered. The second ounce of oil is to cover the 14ozs the first ounce didn't cover. That puts you over by 3/4 ounce of oil, which will be diluted by the 384 ozs of gas at 50:1 in the can now, not enough for the saws to notice the mix is richer.

BillG, You have 384oz (3gal.) of gas with no oil, round up to 400oz and divide by 50, that gives you 8oz of oil to add to get to 50:1 for the whole mix, on the rich side. If you are going to be anal, 7.68oz of oil, I hope you brought your pipette to measure it. On the job, out in the field, you don't have the comfort of a graduated beaker to be so exacting. You go with 8oz. of oil in three gallons of gas.

This has a huge troll factor, an ounce of prevention (oil) will save you pounds of saws.

 

[Bill G]

Geofore,

You have me totally lost so please go back read your post then read my response.

Bill

 

[geofore]

re read

Tom had added oil enough to mix 2 1/2 gallons of gas and made the mistake of putting 3 gallons of gas in the can. How much oil should he add to this mix mistake to get to 50:1? I said add 2 ounces more oil to the mix and you get 3 gallons at near 45:1 which is close enough for the saws albeit a tad rich on oil.

Had Tom added no oil at the start, I said he should just go with adding 8 ounces of oil which would give him 46:1 mix. A tad rich
again.

You have to understand that out on the job you don't always have measuring tools that calibrate closer than one ounce. Any saw that runs on a 50:1 mix will do just fine on a mix of 45:1 or 46:1. You are better off a tad rich on oil than to be lean on oil and seize up the saws. You have to ask yourself, which is more expensive, replace a fouled plug or replace a seized saw?

The confusion was Tom added some amount of oil first, how much more oil does he need to add to this to recover? I don't put saw gas in my vehicles, Tom does.

 

[Bill G]

Re: mixup

Here is your post

Originally posted by geofore
You don't dump it in the van, good way to foul up your emi$$ions, oxygen $ensor and plug$, you put it in the gas powered chipper that doesn't have emissions controls or you add two ounces of oil and call it close enough, everyone can go to work now. 50:1 is idea and the saws won't die at 40 something to 1.

Here is my post

Geofore,

Well if you calculate that out it would be a 400:1 ratio. Do you honestly think that is goig to affect your engine ? If so I sure hope you never use a STP or simalr fuel injector cleaner. Also dont ever put Heet in your tank. I have ran used mixed gas in engines when it has either gotton old or when the truck tank is empty and the fuel can is not. After 150,000 miles and no sensors being replaced I guess I will take my chances on occcasion.

Bill

Here is your next post

I was under the impression he already had mixxed it for 50:1 for 2 1/2 gallon and needed to know how much more to add because he had 3 gallons of gas in the can, not 2 1/2. If it's already mixxed 50:1 for 2 1/2 gallons. Three gallons, that's 64ozs of gas over, one ounce of oil in 50ozs of gas leaves you 14oz of gas not covered. The second ounce of oil is to cover the 14ozs the first ounce didn't cover. That puts you over by 3/4 ounce of oil, which will be diluted by the 384 ozs of gas at 50:1 in the can now, not enough for the saws to notice the mix is richer.

BillG, You have 384oz (3gal.) of gas with no oil, round up to 400oz and divide by 50, that gives you 8oz of oil to add to get to 50:1 for the whole mix, on the rich side. If you are going to be anal, 7.68oz of oil, I hope you brought your pipette to measure it. On the job, out in the field, you don't have the comfort of a graduated beaker to be so exacting. You go with 8oz. of oil in three gallons of gas.

This has a huge troll factor, an ounce of prevention (oil) will save you pounds of saws.

and my next


Geofore,

You have me totally lost so please go back read your post then read my response.

Bill

 

[John Paul Sanborn]

Originally posted by Bill G
Darn I should have proofread that post.

Lets count the mistakes



Bill

I did not see any mistakes

 

[SilverBlue]

Originally posted by bwalker
You guys need to invest $3 in a ratio rite cup. Then you can mix any amount of fuel you want.

Ratio rite cup Ben? never heard of such an animal.