What gives?

[huskyboy]

So I usually don’t use stihl oil cause I hate the way it smells and it burns my eyes lol. But they were out of the oil we usually buy at the time. But that’s not the point of this thread, not looking to talk about the oil itself. (Hell no not another oil thread please lol). What the problem was, that I discovered that surprised me... was when I went to measure it out in the ratio right cup for 4 gallon mix for our gas can. 2.5 gallons of stihl oil really got a slightly different mix ratio than on the ratio right.... I was like huh? Not sure if that’s a good thing or a bad thing lol. I understand there might be some residual oil left in the oil jug. That may affect the reading. My question is that are the ratio right cups accurate or is the oil jug accurate? I usually mix at 40:1... to give some fudge room if the jug or ratio right is off... and I listen to my saws to make sure they are running right.

 

[sawmikaze]

I've seen it in red armor bottles. Some measured as high as 60:1.

 

[Backtroller]

I can see now why guys that you know who are capable of mixing 2 stroke gas have an unexplained lean score. If your using that misleading, actually 60:1 mix on a hot day, really working that saw and add in the fact that she might be tuned a hair lean....

 

[ranchdadmike]

I’d trust the ratio rite way before I’d trust what’s in the bottle/jug. Either way you lean in the discussion, the ratio rite is easier to check for accuracy

 

[sawmikaze]

I can see now why guys that you know who are capable of mixing 2 stroke gas have an unexplained lean score. If your using that misleading, actually 60:1 mix on a hot day, really working that saw and add in the fact that she might be tuned a hair lean....

And a dull chain..clogged air filter...kaboom.

 

[Wilhelm]

That is why I do not trust measuring cups.
I use a medical syringe to get my desired ratio.

 

[Nutball]

I can see now why guys that you know who are capable of mixing 2 stroke gas have an unexplained lean score. If your using that misleading, actually 60:1 mix on a hot day, really working that saw and add in the fact that she might be tuned a hair lean....

Less oil runs richer, so some people could be cooking their saws by using more oil for safe measure, but, I agree that these commonly underfilled oil bottles contribute to quick engine failure.

 

[Wood Doctor]

I run just under 43 to 1:
3 oz oil with a gallon of gas
6 oz oil with 2 gallons of gas
12 oz oil with 4 gallons of gas.
That works for me and has for the past 20 years.

 

[Sprinter]

I use a supposed 1/4 cup measure rescued from the kitchen. It is marked 1/4 cup/50 ml.
Anyway, I grabbed my vernier and measured then to the calculator. Turns it is 59* ml.
Next, I marked the measure with a sharpie to show how much gas to use per measure.
I'm in Canada so, put the oil in first and them pump the appropriate liters for 40/1.
Question everything!

 

[kneedeepinsaws]

I’d trust the ratio rite way before I’d trust what’s in the bottle/jug. Either way you lean in the discussion, the ratio rite is easier to check for accuracy

Ive had the same ratio right for ten years now.

i usually only mix 1 gallon at a time, i pour in the oil for 40:1 at 1gal and pour gas in near the top and pour into gerry. I keep pouring fresh gas into the ratio right until the oil residue is gone then continue pouring fresh gas to the 1gal mark on the gerry.

 

[shadco]

Way back when in the olden days us Mx racers referred to them as ratio wrongs. We were being kinda tongue in check though. We generally mixed larger amounts 5 gallons at a time and as I recall it was 1 bottle of MC1 per 5 gallons so we didn’t usually use rr’s. For fork and shock oil we used graduated cylinders.
.

 

[Louie B]

I run just under 43 to 1:
3 oz oil with a gallon of gas
6 oz oil with 2 gallons of gas
12 oz oil with 4 gallons of gas.
That works for me and has for the past 20 years.

16 oz oil with 5 gallons
Buy my oil in quarts so that mix makes sense to me.
Stilh weedeater/pole saw hates it and slobbers but who cares.
Try to never use it

 

[Stevetheboatguy]

Long story but 5qt fuel to 4oz oil is how mine gets mixed. Marked a oil bottle at a confirmed 4oz and again at 8oz. And my gas jug holds 5qt 4oz exactly. So it's usually spot on to fill two saws and then refill 4 true fuel cans.

Interesting find. The non vented steel cans from vp and true fuel. They keep fuel fresh for much longer than my plastic mix jug. Had a can that got lost in the woods. Found it almost a year later. Sniffed it smelled fresh so ran it through and went without issue. The plastic jug the fuel changes smell after 2mo if not sooner.

Steven

 

[Wilhelm]

Burt Gummer:
"Plastic is not an oxygen barrier"

 

[drf256]

I got 32:1, it’s so simple to remember 1 oz of oil per quart.

Rarely had a problem with that ratio, except on a few MT saws on hot days with Motul800 which is viscous as hell. On that day, it was very hot after a cold night, so the fuel was ice cold, which contributed to more viscosity and less flow.

I’ll take more protection over more power anyday.

I use a urine sample cup. Has a measuring line in it for ounces. I have the luxury of getting them for nothing and in large quantities.

 

[Definitive Dave]

I got 32:1, it’s so simple to remember 1 oz of oil per quart.

Rarely had a problem with that ratio, except on a few MT saws on hot days with Motul800 which is viscous as hell. On that day, it was very hot after a cold night, so the fuel was ice cold, which contributed to more viscosity and less flow.

I’ll take more protection over more power anyday.

I use a urine sample cup. Has a measuring line in it for ounces. I have the luxury of getting them for nothing and in large quantities.

do you recommend a new or slightly used sample cup for accurate measurement

 

[Wilhelm]

I got 32:1, it’s so simple to remember 1 oz of oil per quart.

Rarely had a problem with that ratio, except on a few MT saws on hot days with Motul800 which is viscous as hell. On that day, it was very hot after a cold night, so the fuel was ice cold, which contributed to more viscosity and less flow.

I’ll take more protection over more power anyday.

I use a urine sample cup. Has a measuring line in it for ounces. I have the luxury of getting them for nothing and in large quantities.

Still filled with yellow fluid?

 

[Boomhower]

Less oil runs richer, so some people could be cooking their saws by using more oil for safe measure, but, I agree that these commonly underfilled oil bottles contribute to quick engine failure.

Not trying to derail this thread but I use a ratio rite and stihl oil as well mixed to 32:1. If I read this right, by using more oil I could be causing damage?

 

[sawmikaze]

Not trying to derail this thread but I use a ratio rite and stihl oil as well mixed to 32:1. If I read this right, by using more oil I could be causing damage?

Stihl oil would probably be the last oil I burned at 32:1.

 

[redlight066]

Still filled with yellow fluid?

That may be the answer to what I poured out of a 661 yesterday.