Opti-2 for 2 cycle.... good or bad

[motownbrowne]

oils was recommended at 40:1 long after the 70s read 90s!! I wasn't even alive in the 70s! Nor am I using 70s era oil. Currently I am using Amsoil Saber at 32:1. Nor am I using it in 70s era saws! My main saws are a stihl MS650 (84cc) and Husky 372xp. Both are professional saws and yes I probably cut more wood than the average guy out there.

I cut more wood than the average guy too. I run ethanol free 89 octane mixed at 40:1 with synthetic oil. I mix 2 gallons at a time and toss in an ounce of Stabil. I run it across the board. Dolmar 421, Shindaiwa 488, Stihl 036, Stihl ms460, lawn boy mower, Husqvarna blower, you get the picture. I have no interest in keeping more than one ratio of mix gas around. Everything seems to like the 40:1 just fine.

 

[Clay45]

I recall 32:1 being the common mix for small tool two-cycle engines for years. New newer ashless products permitted thinning to 40:1 once pistons & rings were made to take advantage of it. Same for 50:1.

But this Opti-2 100:1 for any of them is not something I can buy into yet. Yall go ahead and run it and I'll watch and see how it goes.

 

[Cramby]

I recall 32:1 being the common mix for small tool two-cycle engines for years. New newer ashless products permitted thinning to 40:1 once pistons & rings were made to take advantage of it. Same for 50:1.

But this Opti-2 100:1 for any of them is not something I can buy into yet. Yall go ahead and run it and I'll watch and see how it goes.

I have been using and selling Opti 2 for years, best 2 cycle oil out there. Use with confidence is my advice.

 

[ruffdog]

It has been shown that 2-cycle oil mixed at ratios that are excessive only pools at the bottom of the crankcase. With quality oils, to go beyond what is needed in aerated form is just a waste.

 

[clemsonfor]

It has been shown that 2-cycle oil mixed at ratios that are excessive only pools at the bottom of the crankcase. With quality oils, to go beyond what is needed in aerated form is just a waste.

if this were the case would I not just have one of the nastiest slobbery exhausts there is or smoke really excessively after idle? neither of which I do. I have heard those with fixed jets have issues like this.

I do however want to see a SLIGHTLY wet exhaust showing me that oil it totally making It all the way through the saw to the exhaust side of the piston skirt where scuffing occurs first.

 

[clemsonfor]

The quality of oils have come a long way since the 70's. I have been using quality 2-cycle mix at 50:1 since the 80's and have not had a problem. Just remember when you change from a 50:1 mix to a 32:1 mix your fuel to air ratio gets LEANER! The more oil molecules going through the carburetor jets limits the gasoline molecules = LEANER.

you are correct, back out that H jet till you clearly four stroke at WOT out of the cut on a saw and then clean up when you just start in the cut.

 

[clemsonfor]

I have been using and selling Opti 2 for years, best 2 cycle oil out there. Use with confidence is my advice.

do you recommend cutting the packet open and rinsing it, you are bound to leave product in a pack at at 50:1 you are already on the edge of comfortable to me. No its not half an ounce in there or anything but your only putting a few ounces in a gallon already at 50:1

 

[Cramby]

do you recommend cutting the packet open and rinsing it, you are bound to leave product in a pack at at 50:1 you are already on the edge of comfortable to me. No its not half an ounce in there or anything but your only putting a few ounces in a gallon already at 50:1

No rinsing necessary, just squeeze packet good from bottom to top and then dispose. just mixed a gallon for my stihl chainsaw and ryobi weed whacker. the weed whacker is 18 years old and the chainsaw is 20 years old. Been using opti for the last 9 years. No worries.

 

[ruffdog]

you are correct, back out that H jet till you clearly four stroke at WOT out of the cut on a saw and then clean up when you just start in the cut.

When modified with a dual port muffler or the like, you may even have to fatten up the jet inside the carb.

 

[MF283]

OPTI is good stuff as already stated, i've run 50:1 for years, the engine typically outlast the rest of the machine in my experience.

Ronnie