50:1 vs 40:1?

[Gkiesel]

Hi everyone. If this has been debated to death just let me know.
My old saw runs 40:1 My soon to be new saw wants 50:1. It sure would be nice to have just one gas can for both. You don't want to run 50:1 in the 40:1 saw, but I can't see too much harm in running 40:1 in the 50:1 saw. What do you guys think? Thanks, George

 

[Stihl-Pioneer]

50:1 mix with any of todays top quality oils is fine.

 

[Tree Wacker]

i always used 40:1 full synthetic oil in all of my saws.it might smoke a little bit but atleast i know it's getting good lubrication to the piston and rings and stuff.

 

[blsnelling]

Take your pick. It doesn't really matter much using modern synthetic oil in about any stock saw.

 

[sawinredneck]

I like 47:1:bang::bang::bang:

 

[Beer Gut]

That was a ? I had is it better to run a little heavy on the oil. I use Stihl HP Ultra full synthetic is this good oil? Bottle makes 2 gallons is it benificial to open a 2nd bottle to use in the next 3 to 4 cans and give them them each an extra splash?

 

[o8f150]

yep,, its been :deadhorse: i run 45:1

 

[fidiro]

I would use 50:1 if I used synthetic oil but I'm always getting those regular 2.5 gallon mix orange stihl bottles and empty one into a two gallon fuel container and use premium fuel to mix, comes out to 40.214235:1 or close to it:hmm3grin2orange: I use this mix on everything that calls for 50:1

I have a separate 1 gallon container for 32:1 for those cheapo yard tools I still use around the yard.

 

[MechanicMatt]

40:1 its for the piece of mind. But then again I lost my mind a long time ago.:biggrin:

 

[pele55]

50:1

50:1 works very well and you not have any issues.. run the fuel/oil mix richer can actually hurt a saws performance.. the saw doesn't run as efficient having to burn the extra oil...run good gas,no ethanol and a top of the line two stroke oil and you will be just fine

 

[indiansprings]

50:1 use a good synthetic like Stihl Ultra, good clean fresh fuel and forget you ever thought about ratio's.

 

[SawTroll]

I can see absolutely no reason to run anything but 50:1, even in old saws that "called" for 25:1, provided the oil is a quality synthetic one! :smile2:

 

[Gkiesel]

So you would run 50:1 in my old poulan that specs 40:1? would think that might not be good.

 

[sunfish]

So you would run 50:1 in my old poulan that specs 40:1? would think that might not be good.

Yes, the saw's internals are pretty much the same (new and old), but the oil just got better...

 

[SawTroll]

So you would run 50:1 in my old poulan that specs 40:1? would think that might not be good.

I would - it isn't the saw engines that have changed, but the quality of of the oil. If the oil is old or non-synth, you better follow the specs. Never use "out-board" oil in saws!

 

[SawTroll]

Forgot to say, more oil makes the saw run leaner, since some fuel is displaced by the added oil.

 

[StihlyinEly]

50:1 mix with any of todays top quality oils is fine.

Yup.

 

[Anthony_Va.]

If your still worrying about it, just go with the 40:1 in both saws. But yea, 50:1 will be fine in them with modern Syn.

 

[MacLaren]

I just run 50:1 in stock saws and 40:1 in ported. Bel-Ray H1R

 

[SawTroll]

I just run 50:1 in stock saws and 40:1 in ported. Bel-Ray H1R

40:1 will make them running a bit leaner, unless you richen the carb - and I don't see the point? :msp_confused: