2 stroke injector oil vs 2 stroke oil

Joined Jan 13, 2013

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18 Posts

Discussion Starter · #1 · Jun 15, 2016

Hi everyone,

Is there any difference in 2 cycle small engine vs 2 cycle injector oil?

Background, sold my ATV (400 2 stroke) which has been looked after for 20 years, always used Polaris 2 stroke injector oil. This ATV didn't see mud or water,light work around the house, take kids for drive in the neighborhood...etc.

Young Lad I sold it too contacted me to say the engine seized on second trip on the bike, first trip bike worked "awesome", put some oil in it and seized while riding the second trip.

He says he put "2 cycle oil for small engines from a small container"

I told him up front when he purchased it, the in's and out's from a to z...again this bike was well taken care of. Manual went with bike when sold. He test drove the bike, his buddy did too.

So what is the difference between atv 2 cycle injector oil and 2 cycle small engine? Is this the cause?

Thanks

2 stroke injector oil vs 2 stroke oil

Joined Nov 27, 2015

·

798 Posts

Hi everyone,

Is there any difference in 2 cycle small engine vs 2 cycle injector oil?

Background, sold my ATV (400 2 stroke) which has been looked after for 20 years, always used Polaris 2 stroke injector oil. This ATV didn't see mud or water,light work around the house, take kids for drive in the neighborhood...etc.

Young Lad I sold it too contacted me to say the engine seized on second trip on the bike, first trip bike worked "awesome", put some oil in it and seized while riding the second trip.

He says he put "2 cycle oil for small engines from a small container"

I told him up front when he purchased it, the in's and out's from a to z...again this bike was well taken care of. Manual went with bike when sold. He test drove the bike, his buddy did too.

So what is the difference between atv 2 cycle injector oil and 2 cycle small engine? Is this the cause?

Thanks

I'd say there was little to no difference. I'd even venture to say you could mix the gas will used motor oil and it still run for ever. Bad luck to the new owner is all I can say.

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Joined Oct 14, 2013

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3,998 Posts

There is a difference between 2 stroke oil for premix and oil injection systems. I can not tell you what that difference is, but they are labeled differently.

Injection oil could be a thinner viscosity to get through the passages and hoses better. Pre-mix can be thicker because it is suspended in the fuel.

I would agree with previous poster also. Premix can probably run anything but I wouldn't take chances. 2 stroke oils are formulated specifically for the application and will burn cleaner along with lubricate better.

Sounds like the buyer put cheap pre-mix oil in the injection system and it either didn't like it or the pump failed (not likely, but it does happen). Either way, not your fault. You did everything you could.

2 stroke injector oil vs 2 stroke oil

Joined Nov 27, 2015

·

798 Posts

There is a difference between 2 stroke oil for premix and oil injection systems. I can not tell you what that difference is, but they are labeled differently.

Injection oil could be a thinner viscosity to get through the passages and hoses better. Pre-mix can be thicker because it is suspended in the fuel.

I would agree with previous poster also. Premix can probably run anything but I wouldn't take chances. 2 stroke oils are formulated specifically for the application and will burn cleaner along with lubricate better.

Sounds like the buyer put cheap pre-mix oil in the injection system and it either didn't like it or the pump failed (not likely, but it does happen). Either way, not your fault. You did everything you could.

I wouldn't ever run used motor oil in my 2 stroke stihl lawn tools, but once or twice definitely wouldn't ruin it. At least IMO. That's what you get when you buy used. And it's definitely not your fault and I wouldn't lose any sleep.

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Joined Jan 13, 2013

·

18 Posts

Discussion Starter · #5 · Jun 15, 2016

That's what I'm thinking, its the oil he put in it that caused the issue. I wasn't selling cause there was a problem with it...I babied that bike for 20 years..never failed me...just the normal wear and maintenance. I just wanted to explain to him...I was shocked when he email me to say the engine was seized up.

I do know things can fail, but what would be the chance that something else failed that cause this issue....I'm leaning towards the oil.

I was a bit worried during the sale negotiation when he asked if it burnt oil. I said it did...just 5 minutes before that I explained to him that this bike was a 2 stroke...not 4....used mixed gas and it does it automatically and showed him where the oil goes. then he says...I mean does it burn motor oil.....so explained to him that its a 2 stroke, yes it burns oil....I explained as much as I could, he tested it, his friend tested it. Gave him manual with it..delivered to his house...he drove it for one ride..worked great, put oil in it and the second ride, it seized.

he said in his email that he put "2 cycle oil for small engines"

Thanks for the help.

Joined Nov 14, 2009

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16,007 Posts

There's a BIG difference in 2 stroke oils and anyone who says otherwise don't know diddly about 2 strokes. Injector oil is formulated to be INJECTED directly into the cylinder and premix oil is formulated to stay in solution when mixed with fuel...THEY ARE NOT COMPATIBLE! Sounds like he poured cheap convenience store premix oil into his new machine and found out the hard way. Hopefully, he learned a valuable (and expensive) lesson. Additionally, if he poured only a in "little bottle" and ran it for a while he may have actually ran it dry of oil.

2 stroke injector oil vs 2 stroke oil

Joined May 12, 2021

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1 Posts

Hi everyone,

Is there any difference in 2 cycle small engine vs 2 cycle injector oil?

Background, sold my ATV (400 2 stroke) which has been looked after for 20 years, always used Polaris 2 stroke injector oil. This ATV didn't see mud or water,light work around the house, take kids for drive in the neighborhood...etc.

Young Lad I sold it too contacted me to say the engine seized on second trip on the bike, first trip bike worked "awesome", put some oil in it and seized while riding the second trip.

He says he put "2 cycle oil for small engines from a small container"

I told him up front when he purchased it, the in's and out's from a to z...again this bike was well taken care of. Manual went with bike when sold. He test drove the bike, his buddy did too.

So what is the difference between atv 2 cycle injector oil and 2 cycle small engine? Is this the cause?

Thanks

I would bet a buck he put straight gas in it!!!!!!!!

2 stroke injector oil vs 2 stroke oil

2008 800 ho efi, 2019 850 SP premium

Joined Aug 27, 2016

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14,629 Posts

I would bet a buck he put straight gas in it!!!!!!!!

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2 stroke injector oil vs 2 stroke oil

2008 800 ho efi, 2019 850 SP premium

Joined Aug 27, 2016

·

14,629 Posts

I would bet a buck he put straight gas in it!!!!!!!!

FYI, did you know that you are responding to a post that is 5 years old?

Is 2

While all two-stroke oils are compatible, they are not created equal. High-quality synthetic 2-stroke injector oils will create less exhaust smoke, offer improved performance, improved wear control and cleaner engine internals.

Can I use 2

Red Line Two-Stroke Synthetic Engine Lubricant Suitable for use in oil-injection systems as well as premix applications, this synthetic lubricant utilizes premium ester base oils for exceptionally high film strength, even at racing's high temperatures.

What is 2 stroke injection oil?

Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines (typical of small gasoline-powered engines).

Can you use 2 stroke injector oil as premix?

Benefit of Premix If you choose to premix your oil you can still use some of the best oils like Silverfire Smokeless 2T Injector Oil. While Silverfire Smokeless 2t Injector Oil can be run in your oil injection system, it can also be premixed into your gasoline at the correct ratio for your motor.