My weedeater calls for 50:1 mix and my outboard motor calls for 40:1. Can I use 40:1 in both? Doesn’t seem like a lot of difference. Problem is that a gallon of weedeater juice lasts 2 years, so I hate to have two containers.
“Put your creed in your deed.” Emerson
“When asked if you can do something, tell’em “Why certainly I can”, then get busy and find a way to do it.” T. Roosevelt
This 654-sq.-ft. ADU combines vaulted ceilings, reclaimed materials, and efficient design, offering a flexible guest suite and home office above a new garage.
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.
Start Free Trial NowGet instant access to the latest developments in green building, research, and reports from the field.
Start Free Trial Now
Replies
The chainsaws use 40:1 and most of the other stuff we have uses 50:1. I have been using 40:1 in everything for years and have never had a problem using the richer mix in all engines.
I think it's a lot better to keep fresh fuel in one can than to have a bunch of cans with stale fuel in them.
Better too rich than too lean. It will blow a bit more blue smoke, but 40:1 won't gum anything up.
Ive always been told its pretty standard . I mix 32 to 1 and use a lot of it .
If the outboard is water cooled it's a whole different ball game from the air cooled weed eater. Just my uninformed opinion.
Outboard is air cooled 3 hp 50cc."Put your creed in your deed." Emerson
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
You can use the 40-1 in both and you may or may not notice any difference, but it might smoke more.
Me, personaly, I hate the smell of 2-stroke exhaust on my clothes so I wouldn't do it.
As far as mixing goes, I only mix a quart at a time so I can use it before it goes bad. I mix it in an empty motor oil bottle, there are measurements formed right on the side of the bottle.
Yes you can.........................
What Two Stroke oil does is seperate from the gasoline and lubricate the Crank and Wrist pins as well as bearings.
That's the whole reason that the mixture enters under the piston and is pushed up thru the transfer ports on the downstroke.
Anyway.......40:1 versus 50:1 isn't a significant enough difference to matter.
Just keep a spare weedeater spark plug around in case it loads up.
I've got two dirtbikes..........one calls for 50:1 and the other for 25:1 and I run both at 50:1 with zero related failures................of course I always use BelRAy or Golden Spectro..................but neither of your engines is stressed enough for it to matter.
It is the EPA which has dictated the leaner 50:1 mixture. I have an old (1997) LawnBoy 2 cycle mower which needs 32:1 mixture and it is no longer available for that reason -- too much pollution.
Was it EPA standards that made everyone put out 4 stroke weedwhackers? If so that's another thing I have to thank them for. Setting standards for woodstoves completely transformed that industry too.
I have found that too rich of a oil mix will make an engine not run as good. I use 50 to one with two cycle synthetic oil in everything. No problems yet.
My stihl dealer tells me not to use my yamalube two stroke outboard oil in my saws as the outboard being watercooled has different lubrication requirements.
I think he just wants me to keep buying his oil. Whatever the case I use yamalube in the outboard and stihl 2 stroke oil in the chainsaws. I would hate to compromise the performance of either to save a bit of $ or hassle.
If the weedeater is an inexpensive model I would probably run outboard mix in it without a second thought.
Karl