Recent Topics
HUBB reusable stainless steel filter?
by Vern_in_IL - 02/18/20 08:41 PM
Ultrasonic carb cleaning problems
by atikovi - 02/18/20 08:05 PM
Cheeseburger pie
by P10crew - 02/18/20 07:25 PM
The midwinter detail.
by dan_erickson - 02/18/20 05:27 PM
Tired of Using Cassette Player with iPhone
by Gebo - 02/18/20 05:04 PM
STP oil filter
by Stinky123 - 02/18/20 04:41 PM
How is this possible
by V10 - 02/18/20 04:07 PM
Monroe made in Turkey
by atikovi - 02/18/20 03:31 PM
NSFBitog
by Ursatdx - 02/18/20 03:25 PM
Wider rear tires?
by drop - 02/18/20 03:07 PM
ROCKAUTO Coupon Codes
by jrvn - 02/18/20 02:24 PM
Gold (brass?) flecks in drained Honda ATF
by TNM6i - 02/18/20 12:10 PM
What happened to licensed ATF clones?
by TimN3QE - 02/18/20 12:08 PM
E85 in non-flex fuel Ford Expy ~2013
by DriveHard - 02/18/20 11:46 AM
Jacking up a car by itself
by Alfred_B - 02/18/20 11:44 AM
Valvoline MST in 2015 Macan S
by musclecarscott - 02/18/20 11:43 AM
PH10060 oversized?
by bullwinkle - 02/18/20 11:36 AM
Newest Members
GardenStateAudi, Strommen95, Idaholewis, Sprite, spbonus
70746 Registered Users
Who's Online Now
79 registered members (AdditionalD, Aero540T, Ag76, AC1DD, 2009Caraman, 10 invisible), 1,660 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics301,629
Posts5,199,491
Members70,746
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
2 stroke oil question #5183325 08/10/19 02:10 AM
Joined: May 2009
Posts: 575
S
Superbuick96 Offline OP
OP Offline
S
Joined: May 2009
Posts: 575
Can I use 50:1 oil gas mix in a chainsaw that uses 40:1 mix. I keep 50:1 on hand all the time because my line trimmer, and leaf blower use that mix, but my seldomly used chainsaw calls for a 40:1 mix. I don't want to blow up the chainsaw, but I also don't to buy and keep a 40:1 mix as I'd never use it all.
Thanks for your input.



07 Saturn Vue 3.5 AWD M1 EP 5w-20
18 Subaru Forester 2.5 M1 EP 0w-20

Re: 2 stroke oil question [Re: Superbuick96] #5183328 08/10/19 02:33 AM
Joined: Jun 2004
Posts: 747
C
ctechbob Offline
Offline
C
Joined: Jun 2004
Posts: 747
You be much better off mixing 40:1 and just using that in everything. A little extra oil in the 50:1 is much better than not enough in the 40:1 machine, and likely the motor won't even notice. Plenty of people run their 2-Stroke machines on much richer mixtures than what the factory recommends. They'll run cooler and likely last longer as the higher ratio mixtures are generally recommended to appease the EPA.

Last edited by ctechbob; 08/10/19 02:35 AM.

2008 Acura TL Type S-165k
2003 Honda Accord V6-222k
Oil-Havoline HM 5W20
Filter-Partsmaster 61334
Trans-Idemitsu H+
Re: 2 stroke oil question [Re: Superbuick96] #5183352 08/10/19 04:30 AM
Joined: Jan 2009
Posts: 2,793
D
dave123 Offline
Offline
D
Joined: Jan 2009
Posts: 2,793
Same here 40:1 in everything is what I run in everything and most equipment specs 50:1 44:1 technically 3oz per gallon simple easy,

Re: 2 stroke oil question [Re: Superbuick96] #5183365 08/10/19 05:18 AM
Joined: Jul 2005
Posts: 33,949
D
demarpaint Offline
Offline
D
Joined: Jul 2005
Posts: 33,949
I'd stick with the 40:1 mix, or even 32:1. I'd rather be a little over with a 2 cycle mix than under. I run 32:1 to one in all my OPE now, which is 4 ounces/gallon. If I have a small project at the end of the season and need gas I can mix up a quart and use one ounce of oil, which is nice and easy.


God Bless Our Troops

Re: 2 stroke oil question [Re: Superbuick96] #5183373 08/10/19 05:34 AM
Joined: Feb 2017
Posts: 44
L
Little_Lebowski Offline
Offline
L
Joined: Feb 2017
Posts: 44
Don't forget to use a good top tier premium fuel.

Re: 2 stroke oil question [Re: Superbuick96] #5183385 08/10/19 05:54 AM
Joined: Jun 2002
Posts: 2,851
FowVay Offline
Offline
Joined: Jun 2002
Posts: 2,851
Do the 40:1 for all equipment. The difference between 40:1 and 50:1 is a mere .64 ounces. This small amount of oil diluted in 128 ounces of fuel (gallon) is quite simply NOT going to cause or prevent any form of engine damage.

Don't forget that you're lubricating the wrist pin and bottom end bearing with this oil. Mixing leaner simply doesn't make economical sense. Chainsaws tend to be run at full throttle and this means the lubricant is passing through the engine much faster than for something that gets idle time like the string trimmer.

I personally use 32:1 in every two-cycle engine I own. I specify JASO FD/FC or ISO-L-EGD be printed on the bottle. I like to see an oil film on the bottom end of my equipment when I disassemble them. All seem to burn cleanly but not all leave a film on the crank. My favorite is Motul 710 FWIW.

Re: 2 stroke oil question [Re: Superbuick96] #5183453 08/10/19 07:45 AM
Joined: Sep 2004
Posts: 8,649
A
andyd Offline
Offline
A
Joined: Sep 2004
Posts: 8,649
32:1 allows me to use ANY mix oil I choose. Current fav is Valvoline universal. $5.99 qt @ Auto Zone. Mixing a qt at a time allows me to use 87 E 10. Costs under a buck a qt. I keep the mix in an empty pre-mix can. I tried a 40:1 and sure, the Stihl saw loved it. But the stuff that gives that performance burns fast.and cost 5-6$ a qt. I'm more into thrift and lubrication than max performance grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: 2 stroke oil question [Re: Superbuick96] #5183567 08/10/19 10:28 AM
Joined: Jun 2003
Posts: 20,261
C
Chris142 Offline
Offline
C
Joined: Jun 2003
Posts: 20,261
I think that the ratio does not seem to matter much( within reason). The rest of the saw or Wacker usually wears out before the engine does. Back in my 2 stroke atv days I ran 40:1 if trail riding and 32:1 if blasting sand dunes just because I felt better about it.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: 2 stroke oil question [Re: Superbuick96] #5183664 08/10/19 01:45 PM
Joined: Aug 2018
Posts: 227
B
bobdoo Offline
Offline
B
Joined: Aug 2018
Posts: 227
Y'all better remember that changing the gas:oil ratio ALSO changes the air:fuel ratio...

Re: 2 stroke oil question [Re: bobdoo] #5183794 08/10/19 05:05 PM
Joined: Sep 2004
Posts: 8,649
A
andyd Offline
Offline
A
Joined: Sep 2004
Posts: 8,649
Perhaps. It doesn't affect the performance of tool to a noticeable degree though, so it can't be too far off stoich-a- whatzis 14.2 :1 A/F ratio. Some oil does burn especially when you use TC-W3 which is ashless. Not a race tune going on here grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: 2 stroke oil question [Re: Superbuick96] #5183824 08/10/19 05:55 PM
Joined: Jul 2013
Posts: 1,955
J
jhellwig Offline
Offline
J
Joined: Jul 2013
Posts: 1,955
Do what ever lets you sleep at night. As long as you are usuing good oil and gas and maintain the equipment it will never care for normal use.


Sparks fly from my fingers.

1995 Chevy K2500 Suburban lt 5.7
2014 Toyota Sienna
1983 Chevy K5 350
Re: 2 stroke oil question [Re: Little_Lebowski] #5184038 08/11/19 04:54 AM
Joined: May 2009
Posts: 575
S
Superbuick96 Offline OP
OP Offline
S
Joined: May 2009
Posts: 575
Thanks everyone for the great info, good facts here not just opinions which is appreciated. @bobdoo I'm fortunate to have a gas station a just down the road that sells Pure ethanol free gasoline 90 octane. Needless to say Ive been running this gas in all of my equipment since this gas station opened last year.



07 Saturn Vue 3.5 AWD M1 EP 5w-20
18 Subaru Forester 2.5 M1 EP 0w-20

Re: 2 stroke oil question [Re: Superbuick96] #5184597 08/11/19 07:31 PM
Joined: Jan 2010
Posts: 447
S
super20dan Offline
Offline
S
Joined: Jan 2010
Posts: 447
speaking of oils-I discovered a good quality tcw3 oil at autozone . its only 4$ for a quart! stp 2cycle . its fairly new. I have run it the past 3 months in all my 2 cycles in my lawn biz. burns clean for tcw3 -works as well as any low priced oil I have used. have run it at 40.1 and 50.1 lower smoke than some. a bargin at 4$ per qt


99 silverado 5.3
2003 tundra v6
1981 toyota cressida wagon
2003 kia sorento
04 toyota highlander 4cyl 2013 toyota rav4
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™