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Tool Talk Discussion Forum

Oil / Gas Mixture

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John

07-28-2004 08:48:19




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I picked up an early 1950s Homelite portable 2 cycle generator. The instructions say to use ONLY 40 weight ND oil to mix with the gas. Will todays oil for chainsaws do the trick, or will I have to find #40 ND oil some where if it still exists? Thanks for any ideas. John in Pa.




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John---follow-up

07-29-2004 05:06:21




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
First off, let me apolagize for hiding my e-mail address in my original post. I always believe in making it as easy as possible for people to contact me, but forgot to check the NO box.---Thanks for all the input on the oil/gas mix. This unit runs at 3600 rpm, so it is not the high speed of a weed eater or chainsaw. Around here, Wal-Mart used to carry a least some ND oils, but last week when I checked, the only thing the had on the shelf was #30 HD and then only 1 qt. left. Tractor Supply has closed it`s doors from what I heard a few weeks ago. There is an Agway store near by that should have the #40 ND you speak of.--- By the by, the mixture in 1 part oil to 10 parts gas. Quite a rich mix by todays standards. Thanks again. John in York Pa.

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Greg C.

07-29-2004 23:55:59




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 Re: Re: Oil / Gas Mixture in reply to John---follow-up, 07-29-2004 05:06:21  
John,
I'd forget the 40ND any modern 2 cycle oil for aircooled engines will be much better for your generator. I'd take the muffler off if you havent and chip out the carbon and check the exhaust port too. Running motor oil really gummed these 2 cycles up but thats all there was back then. Oh and 24-32:1 should be just fine.



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VADAVE

07-29-2004 11:41:01




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 Re: Re: Oil / Gas Mixture in reply to John---follow-up, 07-29-2004 05:06:21  
I think you can use today's two stroke oil. At least I do in my 1950's vintage chainsaws. And yes they smoke, a lot. Back then they were more worried about the engine lasting then about a little smoke.



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buickanddeere

07-29-2004 13:16:06




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 Re: Re: Oil / Gas Mixture in reply to VADAVE, 07-29-2004 11:41:01  
A 10 to 1 gas/oil mix isn't required now. With modern oils, 25 to 1 is still way safe.



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Ron

07-29-2004 05:40:54




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 Re: Re: Oil / Gas Mixture in reply to John---follow-up, 07-29-2004 05:06:21  
If not, try NAPA or CarQuest. They either stock or can order it for you.



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T_Bone

07-28-2004 23:09:50




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
Hi John,

Becareful about changing what the mfg suggests for a oil mix.

Here a couple years ago the forum had a discussion on using 100:1 synthetic 2cycle oil mix on chain saws requiring a 40:1 mix and one of the members scored a cylinder in the experiment.

40:1 means 40:1 not 100:1

I too have seen 30ND & 40ND at Wally World.

T_Bone



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cmsgtsmith

08-05-2004 08:54:47




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 Re: Re: Oil / Gas Mixture in reply to T_Bone, 07-28-2004 23:09:50  
Does anyone know the difference between outboard 2 cycle oil (TC-W3)and 2 cycle oil for chain saw fuel mix. Any help would be appreciated. Thanks Ron



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john *.?-!.* cub owner

07-28-2004 19:11:56




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
If you don't find the 40 ND oil try a golf cart dealer. 2 cycle golfcart engines also run slower and the oil is designed to keep the exhaust system and ports from clogging.



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Bus Driver

07-28-2004 15:32:26




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
Do you have a specified mix ratio? Homelite once upon a time had it cast into the fuel cap or near the tank fill opening. My old 1959 ZIP model saw specified a mix that is 12 to 1.



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Steve (Magnolia, TX)

07-28-2004 10:44:26




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
I've found #40 ND at both Wal-Mart and Tractor Supply, around here...

Steve



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Carm

07-28-2004 10:09:13




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 Re: Oil / Gas Mixture in reply to John, 07-28-2004 08:48:19  
I have an old Palmer 2 cycle marine engine, and they say to use 30 ND. Is the generator a lower rpm engine? (slower than a chainsaw) The new 2 cycle oil is meant for higher piston speeds and temperatures and will not adequately burn in the combustion chamber causing buildup. I would go with the Homelite recommendations. You could probably use the 30 ND it is readily available.



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buickanddeere

07-28-2004 13:46:38




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 Re: Re: Oil / Gas Mixture in reply to Carm, 07-28-2004 10:09:13  
Today's ashless two stroke oils have to burn clean to meet the EPA regulations. Non Detergent was speced back then because that's all there was. Detergent oil had more additives that increased fouling. Run a two stroke oil intended for air cooled engines, no out board two stroke mix intended for cool running.



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