• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

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2 stroke oil in a 4 stroke

huskyte310

huskyte310

Husqvarna
AA Class
I seen a post in here some one mix 100:1, 2 stroke oil and use it in there 4 stroke bike. How many people also do this. I allready mix one gallon 110 to three gallons of 93 oct. Is it over kill to use some 2 st oil too.
 
I read a in a thread on this site that people tossed in a little two stroke oil to help cushion the valves a bit.:excuseme: It couldn't hurt, I guess. I have been throwing in a little Motul 400 that I have had laying around for quite some time now, because I want to use it up and I use something else in my two stroke bikes. It doesn't smoke and it makes the exhaust smell interesting.:D
 
Some people said they run 200:1. Do you think that would be doing anything. I was thinking of using three oz to four gallons.
 
Not designed for it and might make carbon buildup an issue. Will pollute the muffler packing. Might not be good for EFI bikes especially with the Lamba sensor. Dunno if there is an up side but am making a wild guess there is not.
 
Can't speak for efi bikes but I have been doing this for about 2 years in my 06 TE 450 after talking to a Husky dealer in the Victorian high country. They race Huskies and that is what they do. Huskies and Yammies have 2 compression rings, the top ring will not be as well lubricated as the bottom ring. The oil in the fuel is a big assist in this area. other benefits are it cushions the valves in the seats, and it keeps the fuel in the tank in better nick.
I use 100% synthetic 2 stroke oil (designed to burn best) at 100:1. The bike does not smoke at all. The iridium plug is the same for past 2 years (you should all be using them imho) and it has not fouled at at all. Last, I am 100% convinced the motor runs a tad smoother.
I feel that this approach will give the top end an easier life and pro long the time between rebuilds. I think there is absolutely no downside and for me the bikes performance etc is enough to convince me that this is a good course to take. I do the same in my 07 Yammy WR250F with the same results.
 
I took the lamba sensor and cat.out. I didn't think of pollute the muffler packing good point. At those ratio i don't think there would be a carbon buildup issue. The question is, is it worth the efort to mix 170:1 2st oil to get a little bit of top end lubed and fuel pump.
 
Motosportz;102955 said:
Not designed for it and might make carbon buildup an issue. Will pollute the muffler packing. Might not be good for EFI bikes especially with the Lamba sensor. Dunno if there is an up side but am making a wild guess there is not.
Click to expand...

I do it on my car too, bmw 135i they have really bad HPFP pumps that burn up due to lack of lubrication in modern ethanol fuels

still on my first pump, knock on wood
 
I use about 50cc to 5 gallons when I "mix" mine up....it is approx a 250/1 ratio. Marvel Mystery Oil for me.
 
bmw makes a bad part? lol ...

Adding this oil might help ... I read a 30 page thread on it for car engines and almost all said it help gas mileage ... It might lube things but it is also gonna leave some residue behind also I'd guess ... I guess some one is gonna have to tear their engine down and we can see what it looks like inside ...

Mystery oil? I gotta see its' MSDS before I use it ...
 
If you're going to do this I would run a extremely high ratio of 200-300 to 1. Remember that adding 2T oi will lean out the mixture because the oil doesn't burn the same way the gas does. On 2T engines, just changing the ratio of oil to gas usually means that you need to re-jet to get the most out of the motor, I've even seen some motors seize up because they run to lean after upping the oil ratio. I know it seems kind of counter intuitive, you would think that extra lube means extra protection but the addition of lubricant in the gas means that there are fewer gas molecules in the mixture.
 
ray_ray;103046 said:
bmw makes a bad part? lol ...

Adding this oil might help ... I read a 30 page thread on it for car engines and almost all said it help gas mileage ... It might lube things but it is also gonna leave some residue behind also I'd guess ... I guess some one is gonna have to tear their engine down and we can see what it looks like inside ...

Mystery oil? I gotta see its' MSDS before I use it ...
Click to expand...

it actually does the opposite at such low ratios, it cleans rather than leaves deposits. TCW3 has been used for quite some time and it's designed to burn off, if you google you'll find teardown pictures from the LS1 guys.

It's popular with diesel trucks now, because the newer fuels have the same problem as ethanol fuel, so much refining to remove sulfer that the impurities that used to lubricate the fuel are gone, and older trucks high pressure pumps die prematurely.
 
mrblah;103101 said:
it actually does the opposite at such low ratios, it cleans rather than leaves deposits. TCW3 has been used for quite some time and it's designed to burn off, if you google you'll find teardown pictures from the LS1 guys.

It's popular with diesel trucks now, because the newer fuels have the same problem as ethanol fuel, so much refining to remove sulfer that the impurities that used to lubricate the fuel are gone, and older trucks high pressure pumps die prematurely.
Click to expand...

Yep .... TCW3 certs Oils ... The long term objectives of the two cycle engine industry have been to reduce emissions which contain burnt and unburned oil that has passed through the engine, and to develop a quality of oil that reduces the mixture ratio to fuel while extending the life of the engine.

The diesel words are more interesting ... Diesel always had a oily \ slippery feel to it ... where gas was just wet and dry ... maybe that slp is gone now ...
 
I use Lucas upper cyl. lube. A squirt in the tank at every refill. Have not noticed any neg. effects in either of my Huskys. Anyone else using this?
 
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