Cheap high test gas

[300zxrb26dett]

Diesel used as gasoline 'spark plug' improves economy and emissions

[beatr911]

This is interesting. Is this another acetone rabbit trail or real? Anyone do ABA testing?

Since diesel has a slightly higher btu content, is this the reason for the power and economy gains you all are seeing?

For those that are adding diesel to gasoline:
1) What are the mix ratios you are using?
2) What are the gains in measured mpg you are seeing with those ratios?



For me, I add about 1oz/gallon or about 1:132 of filtered (<1 micron) used engine oil to my fuel. Have been for over 6 years now. It doesn't cost $4/gallon, it's free.

Effects: No measurable effect on MPG but it uses most of my drain oil up between changes. My truck is really sensitive and wants mid-grade most of the time anyway so the increased suseptibility to knock is not tolerable. The Kawasaki tolerates it even with a 4* ignition advance, has very slight ash deposits on the plug. The Odyssey doesn't bat an eye. The 2011 Dodge Caravan for my vanpool doesn't care.

[bandit86]

All I know is that with regular gas I am never even close to EPA mpg. With 1-2%diesel the octane rating is closer to premium that is required and my mpg is closer to EPA spec. Still driving like I stole it

[bandit86]

Let's go over this again. The Material Safety Data Sheet or MSDS say that octane booster is 99% kerosene. 16 ounces of it will turn 25 gallons of 87 octane gas into 93 octane gas
Here is the product;
Synergyn 120+ Octane Boost adds 6 octane numbers

Now I stated that diesel and kerosene are similar, not exactly the same but close enough. Here is another link on refining, this is page 2 it's a good read. Both come from the same spectrum of crude oil
HowStuffWorks "Carbon Chains in Petroleum Products"


Now I stated that since they are close together and one is used as octane booster the othe one will work. I never said fill you car with one or the other, I only said if used in the proportion suggested it will make regular into high octane gas

If 16oz kerosene makes 25 gallo d of 87 into 93, similar quantity of diesel should do a similar effect. I don't have te equipment to test, but anywhere from 92-94 octan

128 ounces in a gallon. 16 oz is 1/8 th of a gallon. So 1/8 to 25 gallons is 1:200 ratio, or .5%! Less than I thought, so if you add more then you are running fuel that does not burn completely untill well into the power stroke, acts as if the timing is way retarded.

[rmay635703]

Originally Posted by bandit86

Now I stated that diesel and kerosene are similar, not exactly the same but close enough. Here is another link on refining, this is page 2 it's a good read.

If 16oz kerosene makes 25 gallo d of 87 into 93, similar quantity of diesel should do a similar effect. I don't have te equipment to test, but anywhere from 92-94 octan

128 ounces in a gallon. 16 oz is 1/8 th of a gallon. So 1/8 to 25 gallons is 1:200 ratio, or .5%! Less than I thought, so if you add more then you are running fuel that does not burn completely untill well into the power stroke, acts as if the timing is way retarded.

Oil has been used as top lube, diesel was a top lube back when it had sulphur, I think the effect you are seeing is higher specific energy, diesel in small amounts below the actual octain affects which are to lower it is to reduce the vapor pressure or gasoline significantly.

The behaviors are quite complex so I am uncertain what you are really doing in that mix.

I will say that I have known (and others here as well) that diesel in small amounts does increase fuel economy in most gasoline engines (historic) but on modern engines that can tune themselves I can only image the affect is amplified.

The trouble with diesel which has an Octane eq of about 25 and parafin (kero) which has an octane rating eq of about 25-40 is that you never know the upper limit or what affects it may have long term on any given engine.

I will say however that modern "gasoline" as we call it already has diesel and kero heavy ends added in US fuel to cheapen it, add energy/economy, reduce vaporization and it has been like that for at least 22years I know of.

Get me an EXACT list of EXACT amounts of each component in modern gasoline and I will give you prize.

[beatr911]

Well, hey. Since my truck is lightly pinging under any sort of load, and it seems to be much better with mid-grade, it should be a good test bed for this octane theory. It doesn't have a knock sensor so it should give a good, audible indicator if it boosts octane or not.

I don't drive it much so please don't expect my results anytime soon.

Someone with a scangauge could also record the RPM, LOD and IGN values at several points and log ABA values for each. With higher octane, newer engines should advance the ignition a degree or two for a given LOD and RPM.

[mwebb]

i tried this with a Geo metro and a the 3tech economy cam
it is not an improvement in anything especially FE

there was so much unburned fuel and 02 in the exhaust that the 02 sensor was driving fuel trim to one extreme or the other , it was not consistent .
i have scan data logs and scope images

but
i was using 2.5 oz diesel to 1 gallon of 87 octane E10
top tier fuel in the summer time

and the stock G10 engine is not a high compression high performance engine

[rmay635703]

Originally Posted by mwebb

i tried this with a Geo metro and a the 3tech economy cam
it is not an improvement in anything especially FE

there was so much unburned fuel and 02 in the exhaust that the 02 sensor was driving fuel trim to one extreme or the other , it was not consistent .
i have scan data logs and scope images

but
i was using 2.5 oz diesel to 1 gallon of 87 octane E10
top tier fuel in the summer time

and the stock G10 engine is not a high compression high performance engine

Hmm, interesting, this is opposite what happened in my dodge but I used a very small amount of Veggie oil mixed into a container of E85 as top lube Somewhere in the 1:200 range.

I always figure less is more, in this case I must have been right.

[gone-ot]

...study this picture carefully:

[mcrews]

Tell me about that 105 stuff!!!????
how much is it?