2 Stroke oil Mix question

[RandyT]

the old homelites and various that said to use 16:1 ratios were pre 2 stroke oil mixes. The 8 ounces to a gallon of gas was 8 ounces of SAE 30 non-detergent motor oil. Most of the 16:1 saws were switched over to 32:1 when 2 stroke oil came out.

 

[Dave5264]

Use a good quality Oil and mix according to the specs on the specific engine.

Each engine may be jetted slightly different, if you go with too much oil (lets say be using only one mix for all engines) you can in fact run it too lean and damage the engine.

 

[valley]

Greetings, I've just had this same talk with myself. I'm using homelite 2 stroke oil. It says mix 50:1. It's scary, the Husky calls for 50:1, I did mix it closer to 40:1 for my 034. I would like to use one mix.

 

[oldyellr]

Just to add another data point to the mix (sneaky pun intended), when I was a kid I had a model airplane diesel engine. You could buy proprietary fuels for these containing various amounts of nitro, but the generic mix you could make yourself was equal parts of kerosene ether and castor oil. That's an oil ratio of 3:1! And castor oil is one of the best racing lubricants in history.

 

[brandoro]

Back when I first started using synthetics I had a Stihl 07 chainsaw. It was plenty old when I got it and had obviously had a hard life. I used the mix ratio the previous owner recomended, probably 25-1 or 30-1. Had to carry a bag of sparkplugs with me because it would seldom restart on the existing plug after running out of fuel. Since I had so little money in the saw when I got the synthetic mix oil that said 100-1 I figured it would be a good test. I mixed it carefully to 100-1, filled the saw and cut off a woodpile, full bar in the wood at 80F until I could hardly stand. The saw had never run better. Never changed another sparkplug the rest of the time I owned the saw. Finally traded it on a Husqvarna 154 about 30? years ago and have run 100-1 in it until I bought a Stihl brushcutter last year. It came with a shrink wrap pack of their mix oil recommended 50-1 so am currently using that. The 154 does not run as well on it and is harder to start. When it's used up I will go back to the 100-1 mix. Too cheap to throw the free oil away:laughing:.
My experience tells me 100-1 oil used at 100-1 is great. No doubt there are special engines, antiques for instance, that may require special care.

 

[Srxmaster]

I use amsoil 100-1 synthetic oil in everything I have owned since 1978 never had a problem, never a fouled plug or blown motor. You have to run what the oil manufacture recommends. Not what product recommends.

 

[sw03]

I use amsoil 100-1 synthetic oil in everything I have owned since 1978 never had a problem, never a fouled plug or blown motor. You have to run what the oil manufacture recommends. Not what product recommends.

BINGO, big time!!!!!!!!..Why Anyone would use the oild 50:1 oil is beyond me.

I just use Amsoil Saber at 100:1 on 2 Shindaiwa EB8520 blowers, 3 Shindaiwa EB620 (old school), 2 echo 2200 trimmers and 1 STIHL 036 saw...So ya, a few dollars in equipment here.

Works mint based upon Amsoil settings, not engine settings.

For $8 a qt, best oil out there.

 

[oldyellr]

BINGO, big time!!!!!!!!..Why Anyone would use the oild 50:1 oil is beyond me.

I just use Amsoil Saber at 100:1 on 2 Shindaiwa EB8520 blowers, 3 Shindaiwa EB620 (old school), 2 echo 2200 trimmers and 1 STIHL 036 saw...So ya, a few dollars in equipment here.

Works mint based upon Amsoil settings, not engine settings.

For $8 a qt, best oil out there.

That price may initially appear high, but do the math. 50:1 oil at $4 a quart would cost you the same to run it. The only caveat is to measure carefully when mixing because at 100:1, one teaspoon less per gallon makes it 115:1.

 

[PILOON]

As a teen we water-skied a lot behind an old Johnson 25 hp.
Our standard mix was 1 qt SAE 30 non detergent per 5 gal of gas.
No 2 stroke oil as it cost more plus we got discount by the case.
We burned 3-4 tanks per day every weekend plus a couple during the week days.
Did that for some 5-6 years.
Must add that that motor jumped off the transom more than a few times.
(std ops was drain the carb, blow dry the plugs and continue on)
B4 selling that old jonrude I tore it down thinking it must need rings ore something but to my total amazement it was just like new.

Wonder if today's motors would stand up to that sort of use/abuse?

 

[sw03]

That price may initially appear high, but do the math. 50:1 oil at $4 a quart would cost you the same to run it. The only caveat is to measure carefully when mixing because at 100:1, one teaspoon less per gallon makes it 115:1.

Price is high? It is cheap for what it does...I love the stuff and works at 100+F and below 0F....