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Old 08-20-2011, 09:47 AM   #1
stan lomax
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Default SAE viscosity of chain saw bar oil

anybody know the SAE viscosity rating of chain saw bar oil?

thanks,

stan
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Old 08-20-2011, 09:59 AM   #2
Virgil Cain
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Default Re: SAE viscosity of chain saw bar oil

Generally it's around SAE 30W. They actually make chain bar oil with "remainder" oil, which is oil that's in the system when they are switching from one product to another. The mixture than gets pumped out in the switchover goes into a holding tank and gets sold to various applications like chain bar oil. Normally a tackifier is added to make the oil more sticky, which makes it stick to the chain better. My chainsaw's owner's manual recommends the use of their brand of bar oil (Echo) but they say you can use 10W-30 if it is unavailable, and I have used 10W-30 on several occasions to no ill effect.
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Old 08-20-2011, 10:09 AM   #3
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Default Re: SAE viscosity of chain saw bar oil

thanks Virgil, the tackifier fooled me into thinking the viscosity was higher than 30W. i was thinking 80W-90 was more like it.

appreciate the info.

stan
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Old 08-20-2011, 11:38 AM   #4
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Default Re: SAE viscosity of chain saw bar oil

That tackifier additive also makes it a very good oil for fogging an engine before laying it up.
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Old 08-20-2011, 11:51 AM   #5
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Default Re: SAE viscosity of chain saw bar oil

The 30w bar oil I use has a sticky additive, keeps it on the chain, not slung all over the place.
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Old 08-20-2011, 12:09 PM   #6
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Default Re: SAE viscosity of chain saw bar oil

I have heard of people using bar oil for undercoating cars in the salty areas...
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Old 08-20-2011, 02:58 PM   #7
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Default Re: SAE viscosity of chain saw bar oil

second on undercoating. I've seen bar oil that has both 30 weight and (I'm sure) atf mixed in. It really is 'scrap oil'!
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Old 08-20-2011, 10:02 PM   #8
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Default Re: SAE viscosity of chain saw bar oil

For what its worth my Father use to keep a bit of used oil from oil changes on the family car then used it in the chain saw w/o any problems. Gold or Black oil spitting out on fire wood as you cut it shouldn't be a big deal.
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