What oil is best? and what ratio?

[Keith Gandy]

Id love to but hard to do from this D9 dozer 12hrs a day. My strato gutted 241 loved r2 @ 20to1 as far as how it ran

 

[Ron660]

I would think it would be a blubbering sounding turd .

Wonder why some of the old saws recommended 16:1?

 

[Ron660]

Id love to but hard to do from this D9 dozer 12hrs a day. My strato gutted 241 loved r2 @ 20to1 as far as how it ran

I've got some creosote poles and lighter pine I could try it on.

 

[Keith Gandy]

I've got some creosote poles and lighter pine I could try it on.

Be careful breathing the creosote when cutting it ole buddy

 

[Ron660]

Be careful breathing the cresote when cutting it ole buddy

Just joking. Randy said that one time I remember just joking.

 

[Ron660]

Id love to but hard to do from this D9 dozer 12hrs a day. My strato gutted 241 loved r2 @ 20to1 as far as how it ran

How about trying a Mopar method? 2 ozs of 2R with 2 ozs of Klotz or 800.

 

[Keith Gandy]

How about trying a Mopar method? 2 ozs of 2R with 2 ozs of Klotz or 800.

I really see no need to. Then u would have a K2!!! Lol

 

[junkman]

Wonder why some of the old saws recommended 16:1?

because they ran 4 cycle engine oil instead of mix ,and they smoked more also

Edit ,i would think a lot of the piston would be washed ,and the other half suffer buildup from not running hot enough to burn all the oil off also ,i may be wrong though ,have never tried it myself .

 

[KenJax Tree]

Wonder why some of the old saws recommended 16:1?

Oil quality wasn't as good as it is now is my guess.

 

[jake wells]

Wonder why some of the old saws recommended 16:1?

type of bearings i have a lawnboy 2 stroke made in 1970 it has bronze bushing bearing and specifies 16:1 only as any other ratio will cause bearing failure.

 

[jake wells]

because they ran 4 cycle engine oil instead of mix ,and they smoked more also

Edit ,i would think a lot of the piston would be washed ,and the other half suffer buildup from not running hot enough to burn all the oil off also ,i may be wrong though ,have never tried it myself .

a lot of 2 stroke engines pre 1970 had plain bearings or bronze bushings so 10:1 16: 20:1 was a must any ratio other than those will cause serious bearing problems or failure.

 

[Ron660]

a lot of 2 stroke engines pre 1970 had plain bearings or bronze bushings so 10:1 16: 20:1 was a must any ratio other than those will cause serious bearing problems or failure.

Wonder when those ratios changed to less oil and bearing improvements happened? I forgot the ratio my Dad use to mix back in the 70's in his Homelite.

 

[Ron660]

I really see no need to. Then u would have a K2!!! Lol

With Koltz it'd be R52 but with Motul I'd be 802 off-road. I would like to do several timed cuts with my 660 or 372 using a 32:1 mix vs 16:1. The inside of my muffler might look like an oil spill though.

 

[Ron660]

a lot of 2 stroke engines pre 1970 had plain bearings or bronze bushings so 10:1 16: 20:1 was a must any ratio other than those will cause serious bearing problems or failure.

It would be interesting to know the viscosity of those older 2-cycle oils back in the 70's. Most chainsaw oil viscosities are in the 7 to 8 range these days. Racing oils normally 12+.

 

[Terry Hennessy]

nothing wrong with cheap oil i ran it for years with hiccup using bad gas is going to cause more problems through.

and 87-octane has to be 10% ethanol in my part of the country... extra oil (I suspect) will never make up for poor gas...(or water); if you take 91-octane pure-gas and add 10%-ethanol, does it give you 87-octane? I wonder...

 

[huskihl]

Also, on the older stuff recommending 16:1, many of the bore surfaces were unplated aluminum. And there was no epa...

 

[mdavlee]

Some old saws were those open bearings as well that needed tons of lube.

 

[jake wells]

It would be interesting to know the viscosity of those older 2-cycle oils back in the 70's. Most chainsaw oil viscosities are in the 7 to 8 range these days. Racing oils normally 12+.

lawn boy oil first formulated 2 cycle to a ashless spec in 1971 was SAE 40 back then today it is SAE 30 most oils today are a sae 20 - 30 today.
dad said he didn't see low ash 2 cycle oils till around 1975 and back then the mix for most saws was 16:1,32:1 or 40:1

 

[jake wells]

most of my stuff uses a plain aluminum bore with chrome moly rings.

 

[mdavlee]

When I was talking to some guys at a bike shop years back the 2 oils they recommended for saws were HP2 and Klotz Super. Funny how right they were now thinking back on it.