Break in oil

S

sweeperguy

Active member
Looking for opinions on break in oil, Syn vs. Dino. Reading older threads (13 and older) concensus seems to be dino for breakin then switch to full syn. Owners manual says gold for oil tank and pre-mix. ONLY INTERESTED IN SYN VS DINO, NOT POLARIS vs OTHER BRANDS. Last year with Austins sled dealer told him Blue for break in, then switch to Gold Also run it like you stole it? or per owners manual vary throttle, no WOT for first tank of gas. My Dad always said ride it new like you'll be riding it later.

Ok now one other question nagging me. I see posts saying that pre mixing oil in gas causes lean condition. Seems to me only worry of lean burn with a 2 stroke is that not enough oil to lube properly. Some cooling from fuel, but the volume of liquid is still there. just that it's pre-mix vs straight gas. If mixing oil in gas should have plenty to lube? So shouldn't have an issue with lean burn down? Pre-mix probably lower octane due to displacement of oil, so I'll set my fuel to Ethanol.
 
W

whitedust

Well-known member
Dino oil for break in then switch to full syn. I always varied throttle on 2s break in & mixed oil in gas but dam things still blew up at about 3500 miles...lol. My bud would use dino oil & mix oil in gas during 2s break in then ride it like he stole it really hard on lakes then let it cool down & do it again. His 800 2s also belw up at about 3500 miles. Either way the engines were broken in & same result in the end. Best of luck to you but 2s & me did not hold up!
 
S

sweeperguy

Active member
whitedust said:
Dino oil for break in then switch to full syn. I always varied throttle on 2s break in & mixed oil in gas but dam things still blew up at about 3500 miles...lol. My bud would use dino oil & mix oil in gas during 2s break in then ride it like he stole it really hard on lakes then let it cool down & do it again. His 800 2s also belw up at about 3500 miles. Either way the engines were broken in & same result in the end. Best of luck to you but 2s & me did not hold up!
Click to expand...

So sell at 3250? LOL.
 
W

whitedust

Well-known member
sweeperguy said:
So sell at 3250? LOL.
Click to expand...

No we both got stuck with our 800 2s rebuilds then traded in on Yamaha 4s & lived happily ever after.:) We are long distance trail riders & ride unplowed FRs everytime out then 144 track for me to cross lakes & fields to get to trails. You have a new RMK so you are becoming a powder hound mostly high rpm use occasional trail use so 2s is best for you & 600 will hold up...hopefully. Next door neighbor had poo 600 Rush but also blew up & he wants to sell said snowmobiles too expensive & just a college kid & done.....smart kid....lol :)
 
G

G

Guest
Dino for at least 100 miles. The reason for this is so the rings seat. The main reason you put oil in the first tank of a new 2 smoker is just to have a little insurance in case something in the oil injection system is screwed up. if the oil tank level goes down after the first tank of gas then everything is working and you are good to go. A pint or so of oil in 10 gallons of gas isn't going to change the octane or cooling or heating of the mix enough to matter. If it burns down with a little oil in the gas tank you probably have other issues.
 
S

sweeperguy

Active member
whitedust said:
No we both got stuck with our 800 2s rebuilds then traded in on Yamaha 4s & lived happily ever after.:) We are long distance trail riders & ride unplowed FRs everytime out then 144 track for me to cross lakes & fields to get to trails. You have a new RMK so you are becoming a powder hound mostly high rpm use occasional trail use so 2s is best for you & 600 will hold up...hopefully. Next door neighbor had poo 600 Rush but also blew up & he wants to sell said snowmobiles too expensive & just a college kid & done.....smart kid....lol :)
Click to expand...

Agree on expensive if running new high buck machines. Most of my riding over the years have only rode older used sleds. Some complete Pieces of S...! I would never give up riding, must be addicted to white powder.
In fact this is only my second brand new sled I've ever owned.
I think its a mistake for him to throw in the towel, granted burning down a sled can be expensive if out of warranty. But used sleds can be had at a fraction of the cost. Hope he re-considers.
 
W

whitedust

Well-known member
sweeperguy said:
Agree on expensive if running new high buck machines. Most of my riding over the years have only rode older used sleds. Some complete Pieces of S...! I would never give up riding, must be addicted to white powder.
In fact this is only my second brand new sled I've ever owned.
I think its a mistake for him to throw in the towel, granted burning down a sled can be expensive if out of warranty. But used sleds can be had at a fraction of the cost. Hope he re-considers.
Click to expand...

He has college expenses if he does sell not sure he will be back. I too am addicted but I didn't want to influence him & let him find his own way in good time.
 
G

groomerdriver

New member
Dino oil only on the break in tank to help seat the rings. LOT's of dino oil! Make that baby smoke!!!!
We'll keep the cabin door closed so none of the smell gets in! :cool:
 
srt20

srt20

Active member
I use syn from the beginning. I prefer syn oil for dry cases, but in all reality, it's probably not that big of a deal.

IMO, you want some WOT bursts. Of course not until engine is fully warmed and driven a few miles. WOT creates higher cylinder pressures. And that will "seat" the rings better then Dino or syn oil debate. That also applies to 4s engines and diesels.

If you want to run a tank of Dino, then run syn, that would be fine and hurt nothing. If you want to run syn from get go, that will be fine as well. Also I wouldn't be "gentile" to the engine, but I wouldn't abuse it either. No steady throttle for long periods. Vary throttle and get some WOT bursts as well. Going up a hill or in some deep snow at WOT, builds cylinder psi. Slowly accelerating up to WOT doesn't.

I usually add some oil to gas on a fresh engine or top end. But sometimes I forget. Not a huge deal either way. The only way you would burn down an engine by adding premix is if the fuel/air ratio was way to close to the edge already. Give the tank 100:1 or whatever makes you feel good. I don't measure it. I just dump some in a forget about it. Probably something like 8-16 ounces for a full tank. 10-11 gallons.
 
W

whitedust

Well-known member
srt20 said:
I use syn from the beginning. I prefer syn oil for dry cases, but in all reality, it's probably not that big of a deal.

IMO, you want some WOT bursts. Of course not until engine is fully warmed and driven a few miles. WOT creates higher cylinder pressures. And that will "seat" the rings better then Dino or syn oil debate. That also applies to 4s engines and diesels.

If you want to run a tank of Dino, then run syn, that would be fine and hurt nothing. If you want to run syn from get go, that will be fine as well. Also I wouldn't be "gentile" to the engine, but I wouldn't abuse it either. No steady throttle for long periods. Vary throttle and get some WOT bursts as well. Going up a hill or in some deep snow at WOT, builds cylinder psi. Slowly accelerating up to WOT doesn't.

I usually add some oil to gas on a fresh engine or top end. But sometimes I forget. Not a huge deal either way. The only way you would burn down an engine by adding premix is if the fuel/air ratio was way to close to the edge already. Give the tank 100:1 or whatever makes you feel good. I don't measure it. I just dump some in a forget about it. Probably something like 8-16 ounces for a full tank. 10-11 gallons.
Click to expand...

This sounds good to me & the way to break in a 2s....really not much to worry about other than vary Throttle and let it pull every now & again. These injected 2s are smart & know when you are in break in mode.
 
S

sweeperguy

Active member
Started my break in, put on 15 miles or so, couldn't help myself, was bored sitting home temps in 20's. Actually planned on a few more miles, but the trails were short, between ditch banging trails, took out most of the cooling snow so had to put back on trailer.
 
You must log in or register to reply here.
Top