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

Al Mac · May 28, 2016

I picked up some 2 cycle oil yesterday. The dealer said this Opti-2 stuff will do all 2 cycle motors no matter the mix ratio. One mix for all motors. They have been using it for a few years (not sure how many) with no issues.
Any one else use it and what is your thoughts on it.

Al

coobie · May 29, 2016

Opti-2 is top notch 2 cycle oil.Use it with confidence.

Cramby · May 29, 2016

I agree with coobie, been using it for years on all my 2 cycle stuff. Also if you use the 4 cycle oil from the beginning on a new engine, the Opti company will double the factory warranty.

Al Mac · May 29, 2016

Tkx for your input.
I will give it a try with confidence.

Al

clemsonfor · Jun 1, 2016

I don't like pouches as there is more left that you cant rinse out. but I mix at 32:1 so there would be some fudge error.

I buy my oil usually in quart bottles and mix it up a gallon or two at the time with a ratio bottle and rinse the bottle out after I measure.

Clay45 · Jun 1, 2016

I'm comfortable that you can mix it at 50:1 for 2-cycle engines that use that mix, 40:1 for 2-cycle engines that use that mix, 32:1 for 2-cycle engines that use that mix. But no way would I just mix up 40:1 and run everything on it even if it didn't call for that mix. One two-cycle oil?-yes; once two-cycle mix?-No.

Hope that helps!

clemsonfor · Jun 1, 2016

Clay45 said:
I'm comfortable that you can mix it at 50:1 for 2-cycle engines that use that mix, 40:1 for 2-cycle engines that use that mix, 32:1 for 2-cycle engines that use that mix. But no way would I just mix up 40:1 and run everything on it even if it didn't call for that mix. One two-cycle oil?-yes; once two-cycle mix?-No.

Hope that helps!

Why not? Any two stroke running and TUNED properly should run fine at 50:1 or 32:1. Exceptions exist with fixed jet applications etc but most guys that are into two strokes and build the engines would never run one at 50:1 there is just not enough oil on parts like piston skirts and more importantly in the bottom end. The swap from 40:1 to 50:1 was done to appease EPA emissions restrictions and had nothing to do with engine warranty, build construction or oil make up. One year stihl recommended 40:1 on all saws and the next it went to 50:1????? HMMMMMM they had been making the same saw model before that swap and the same oil before and after, so why after all those years switch?

2458n · Jun 1, 2016

I run this oil at the 50 to 1 ratio as recommended. Use it for everything I own. Buying 93 octane at the pump. I run 5gallons into the truck= fill my gallon can and off I go. Runs fine even in a very old 1050 Homelite chainsaw,string trimmers and Mantis tiller. They do not smoke or run rough. If you run the gas out at end of season, they will start in the spring without the carb work. Even run it in a 465 Yamaha dirt bike.

ruffdog · Jun 1, 2016

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.

clemsonfor · Jun 2, 2016

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.

motownbrowne · Jun 2, 2016

clemsonfor said:
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 · Jun 2, 2016

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 · Jun 3, 2016

Clay45 said:
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 · Jun 3, 2016

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 · Jun 3, 2016

ruffdog said:
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 · Jun 3, 2016

ruffdog said:
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 · Jun 3, 2016

Cramby said:
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 · Jun 3, 2016

clemsonfor said:
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 · Jun 3, 2016

clemsonfor said:
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.