I was very interested in the responces to ct2500's question back on 02-24 regarding fuel additives being used by guys concerned about the low sulfur fuel in use now. Are things such as 2-cycle oil and Mystery oil just backyard moonshine recipes or has there been some sort of detailed testing with data to support such use? The idea makes sence but I worry about plugged injectors,excessive sooting,and things of that nature that might cause more harm than good. Talk to me now.....

 

Why not just use something like Stanadyne PF which is proven to improve lubricity, has other benefits, and does not cause harm?

I'm not saying that 2-cycle oil or Mystery Oil are bad, I'm just saying why bother if you don't know?

 

Exactly my point. Been using the Power Service product for years but, apparently, guys are using the oils in addition to the commercial products.

 

I've been using the Stanadyne and my truck hasn't had any problems w/ the fuel system.

 

Mopar1973Man has a lot of knowledge on the subject of 2 cycle oil, maybe he will jump in. If not his signature say to PM him for details.

 

Hmmm... I'm floating around check over sites...

What it comes down to that most common additives are mostly cleaner and solvents... They have very little lubricants if any at all...

Just look at the test page...


Then if 2 cycle oil is so bad why did I do so good on the dyno at 105:1 ratio???

(Meridian Motorsports - Meridian, Idaho 5/19/07)

Stock run 228/462
Edge 5x5 381/826
Edge 5x5 379/831

Then in the cold Idaho winter I never gelled up yet down to -20.2*F (Jan. 16, 2007) - NO ANTI-GEL or CETANE BOOSTER! Just 2 cycle oil...


No problems here...

 

Go to The Diesel Place and search for the Lubricity study done by an independent lab comparing biodiesel, 2 cycle and all the other fuel and lubrication addititives. Bio diesel at 5% come out # 1 for lubrication. also read the posts.

 

A copy of that study is in the above table...

 

After seeing this post and the one on diesel place as I mentioned in another post would bio diesel and 2cycle added to the gas be better ? Or is one sufficient.

 

In the city of Portland Oregon all diesel fuel has a minium of 5% biodiesel as mandated by City. I use 5% as this appears to be best lubricant see the study here and also on the diesel place.

 

Reading the above chart is interesting........

But it brings up a question.
If you combine two additives, do you get a cumulitive effect, or just the rating of the best or worst product?

IE: Stanadyne PF + TC W-3 2cycle oil............
I've been using that combo for the past couple of months.

 

You got to remember that the fuel is much lower in HFRR...

Basically what need to happen... If you adding additive and you want to get the most of it. Say you add 2 cycle so the next one you add should be a LOWER HFRR number!

If you add a higher HFRR additive you just washing out the lowest HFRR additive.

It not cumulative effect. Stronger of the two additives takes over! So if its a strong solvent like MMO then your going rasise HFRR if it a strong lubricant like B2 then the HFRR number will fall!

 

The reasoning behind my question is that while TC W-3 2cycle oil has better lubricating properties, it does nothing for reducing Pour Point, or Cetane Improvement.

So if I'm not misunderstanding.......the 2 cycle + Stanadyne PF would be the best of both worlds.....correct?

Has anyone tested the Amalgamated "Special Blend" that was going around awhile ago on another forum?

 

Be aware that 2 cycle oil had the same "pour point depressants" as diesel fuel and has pour points as low as -40*F. Think about it snowmobiles would be rather usless if the oil gelled up (Oil injected systems)???

Check out on oil I use in the cold winter...
http://www.smallandsonsoil.com/index.php?x=PH_injex

Last winter I went down to -20.2*F with only 2 cycle oil in my fuel... I never had a problem...


As for cetane levels why do you need to boost it more? Look at the level Chevron is at right now! Cetane of 43-47 Cetane...
http://www.cpchem.com/enu/tds_unsecu...el_summary.pdf

The high your cetane level the less BTU's the fuel has... It been prove on a dyno by adding a common cetane booster that you will lose upwars of 20-50 HP... The owner switch over to his aux tank and ran just 2 cycle oil and gain back and added +20 HP with just 2 cycle oil... I watch it happen at Meridian motorsports Dyno in Merdian Idaho (5/19/07) Ask yourelf why is it that every winter we all lose about 1-2 MPG??? Highier Cetane levels...(45-47) In the summer it around (40-43)

Cetane booster are produced from low flash point material like naptha which has only 15,000 BTU's, mineral spirits at 19,000 BTUs, Xylene at 18,000 BTU's compared to 147,000 BTU's in you fuel... So more cetane booster you add the less power your fuel prduces... If you want I'll send you MSDS sheets for most additives...

2 Cycle oil is relative high in BTU's at about 138,000 BTU's so there is no loss in power... I dyno'ed at 381/826 and 379/831 using 105:1 ratio of 2 cycle oil... (I'll post my Dyno sheet if anyone wants it)

Well there is my 2 cents...

 

Sometimes indiscriminant mixing of different additives can do more harm than good because of unexpected interactions.

Good article on additives http://www.chevron.com/products/prod.../L2_7_1_fs.htm