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#889722 - 04/29/07 07:54 AM Does 2 cycle oil really go bad?
Car Luver Offline


Registered: 05/11/05
Posts: 110
Loc: Seattle Wa
does it go bad?

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#889723 - 04/29/07 08:14 AM Re: Does 2 cycle oil really go bad? [Re: Car Luver]
dwendt44 Offline


Registered: 05/17/06
Posts: 3692
Loc: Central Wisconsin
Depends on how old. Maybe how it's stored, and/or the quality of oil to start with.
I have a cheap quart of 2 cycle oil that I use for odd mix amounts, usually a 1/2 gal at a time. I use small bottles or pouches that are just right for one gallon mixes otherwise.
That quart has been on a shelf for 5 years or more.
Mower runs fine.
_________________________
There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.

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#889724 - 04/29/07 10:08 AM Re: Does 2 cycle oil really go bad? [Re: dwendt44]
lars11 Offline


Registered: 12/16/06
Posts: 934
Loc: Sweden
Seems that some 2t oil is a bit "difficult" even when fresh. Some TCW3 outboard oils can't be mixed with other tcw3 oil without gelling for example... I have used some husqvarna oil for the weeder and chainsaw, the oil was ca 15 yrs old but unopened- No problems at all. Anther bottle of same oil, opened, showed some strange lumps floating around. Probably moisture ruining it.
I suppose that many oils would be ok even if old if stored properly. The only thing I can think of is the additives deteriorating or dropping to the bottom of the bottle. The oil itself is not breaking down over time, ask the dinos...
Look at the oil. If it looks like new, use it. Else... dump it.

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#889725 - 04/29/07 10:00 PM Re: Does 2 cycle oil really go bad? [Re: lars11]
Cujet Offline


Registered: 02/15/03
Posts: 6058
Loc: Jupiter, Florida
Ditto above.

I have used some very old 2 cycle oil without any problems.

In fact, if it looks OK, it probably is.

Chris
_________________________
Turbo's rule.

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#889726 - 04/30/07 01:00 AM Re: Does 2 cycle oil really go bad? [Re: Cujet]
Bill Kapaun Offline


Registered: 11/15/02
Posts: 788
Loc: Oregon
If your oil is "many" years old, why not move up to the new technology?

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#889727 - 05/01/07 03:31 AM Re: Does 2 cycle oil really go bad? [Re: Car Luver]
Car Luver Offline


Registered: 05/11/05
Posts: 110
Loc: Seattle Wa
thanks for the info

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#889728 - 05/01/07 06:58 AM Re: Does 2 cycle oil really go bad? [Re: Car Luver]
JHZR2 Offline



Registered: 12/14/02
Posts: 39786
Loc: New Jersey
yep, we had some echo oil that was probably 15 years old, and it worked great in the weedwacker.

Considering what was used in the days of old (30wt motor oil hand mixed into gasoline), I suppose that even the oldest junkiest 2-ccle oil is still good stuff that will do great.

JMH

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#889729 - 05/03/07 10:13 AM Re: Does 2 cycle oil really go bad? [Re: JHZR2]
lars11 Offline


Registered: 12/16/06
Posts: 934
Loc: Sweden
Bill has a point. If you are running a very high tech 2T, don't use the older oil. Use the oil with equivalent (old) engine types: Old chainsaw oil for general type saws and weeders and such.
Not for oil injected, electronically controlled engines of any kind since they may have been designed for newer oils.
Same with outboard oils-Not in air cooled engines unless specified on the oil. (may be ok with some older oils...)

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