Ram1999

The first time I added 2 stroke I did so with 3/4 tank, I just drove forward and backward a few times hitting the brakes hard to slush it around well in the tank. A few people in the parking lot were looking and wondering what the heck I was doing though.

No bluish smoke, 2 stroke burns pretty clean at the low ratios we are using it. Not like a weed wacker.

Pooter

LOL, youre more than welcome to drive next to mine to wake you back up

Its nowhere near my old 12valve, but it sure aint gasser quiet

ofcmarc

Anyone running 2-stroke in cold temps? (Cold = -20*F and colder for more than an overnight ) Does it cause fuel to gell faster/slower or no effect on gelling. 6 months+ of #1 fuel is hard on pumps and I'd like a little more lube/protection. I'm religeous with the stanadyne but more/better lube can't hurt.

BTW- temps here have been -40* to -50*overnight and -20* to -25* for the last 3 days and are expected to stay the same until the middle of next week. See sig.

01RAMer

I 'd be careful of oil oversaturation though. I don't run my tank empty between fills, so there is a mixture ratio in the tank already when I fuel. If I would add the same amount at each fill, the mixture will get heavier and heavier. I would suggest adding every other, to every third fill, and then still consider the mix ratio that may already be in the tank and adjust your additive according. I've been reading how some say they add a quart every fill up. Wow! If they're not empting their tanks completely, which I know they aren't, their oil to fuel ratio must really be getting high by now. I know they are not letting the tanks get empty as tanks should not be allowed to get less than half to reduce condensation and provide proper cooling for the fuel. JM2C.

charger 69

Its my understanding that the first gens with the VE pump take the worst hit with this new fuel so I have been adding a quart of 2-stroke oil to a tank full for the past year.I honestly don't know how much it does or doesn't do.

mitternocht

01RAMer has interesting point, however I don’t think it would be possible to oversaturate the fuel. The oil concentration in the tank will reach a steady state value after a while. It will approach this steady state value over time.

I calculate that if you have 34.75 gallons of diesel and add 1 qt (32oz) of oil, then run the tank until it has 5 gallons left then fill up with 29.75 gallons of diesel and 1 qt of oil and repeat this process it will take about 3 fill-ups to reach a steady state where you have around 43.9 oz of oil in each full 35 gallon tank.

Obviously your fill up amounts and oil additions will vary, however You’ll never end up in a situation where you have 30 gallons of oil and 5 gallons of diesel in your tank. I don’t think it would be necessary to skip a fill up without oil, unless you want to get back down to having 32 oz of oil in your tank.

VADSLRAM

Mine threw this wierd purple smoke when I sucked up a honda on the highway....
....
...
it smelled like Mushu Pork too

01RAMer

Interesting concept. I hadn't thought of that as a possibility. I'll have to do some math. Question now is: How much oil in the fuel is ok? Once that steady state is achieved, what would be the impact on the engine if this resulted in way too much oil in the fuel. I would think pumping a thicker fuel would effect, if not damage, the lift pump, if not also the injectors, any filters and screens. Injectors in particular, are built to such close tolerances, the added pressures must have detrimental results, and the pop-off pressures would be drastically increased. I would also think heavier fuels would also clog the injector orifices along with any filters or screens. What is your insight on this? What would be the maximum amount of oil, 2-cycle oil specifically, that would be considered safe and reliable for our diesels? Appreciate any knowledge you might have?

DBLR

From what I understand 1oz of 2-cycle oil is all you need per gallon of diesel. So if you only put in 10 gallons of fuel you only add 10 oz of 2-cycle oil then you don’t have to worry about over saturating your fuel.

I read a post else where, where a person put 3 qts of 2-cycle oil in a tank of diesel and he reported that he lost 90 HP on the dyno. So one could assume, guess that more is not always better! My self I mix my 2-cycle oil and winter PS 50/50 and then use 1oz per gallon of fuel.


JMHO.

mitternocht

Say you run to 5 gallons left when you fuel up and add
32 oz of oil, you have to add the previous amount of
oil in the tank to calculate how much is in the new full tank.

I used Excel: I made a boo-boo last time so I get
SS to be 37 and 1/3 oz now.

Oil/Fuel Ratio is calculated to be 5/35 the previous fuel
ratio plus the added fuel ratio (.25/34.75).

Tank | Fuel | 2 Cycle | Oil/Fuel Ratio| OZ Oil in fuel

1 34.75 0.25 0.00719424 32.00000000
2 34.75 0.25 0.00822199 36.57142857
3 34.75 0.25 0.00836882 37.22448980
4 34.75 0.25 0.00838979 37.31778426
5 34.75 0.25 0.00839279 37.33111204
6 34.75 0.25 0.00839321 37.33301601
7 34.75 0.25 0.00839328 37.33328800
8 34.75 0.25 0.00839328 37.33332686
9 34.75 0.25 0.00839329 37.33333241
10 34.75 0.25 0.00839329 37.33333320
11 34.75 0.25 0.00839329 37.33333331
12 34.75 0.25 0.00839329 37.33333333
13 34.75 0.25 0.00839329 37.33333333
14 34.75 0.25 0.00839329 37.33333333
15 34.75 0.25 0.00839329 37.33333333
16 34.75 0.25 0.00839329 37.33333333

01RAMer

Interesting. Using my own calculations with the addition of 1 quart of oil to a 35 gal tank, I start out with 0.914285714 oz of oil per gal of fuel. By leaving 10 gals of mixed fuel in the tank at each fill and adding 1 quart of oil each time, I see that the oil saturation does indeed stabilize at 1.28 oz of oil per gal of fuel, after just 18 fills. This is quite amazing. I wouldn't have thought. Good job!