INITIAL AV GAS IMPRESSION..............

So I got 10 gallons of the 100ll for $39.00 and took it for a putt on my sun beer run just for an idle cruise feel. It does run a bit richer at idle and cruise but not bad and the drop in gear is a bit tighter than the 101 unleaded VP. Smells great though and will do some high speed blasts tomorrow and plug readings. Someone mentioned adding Marvel Mystery oil stating av gas doesn't have good lubricating properties any truth to that............

Do they add Marvel Mystery Oil to the gas tank of an airplane?

Run it as is.

A lot of people do actually, I used to but then I just quit because I began running mogas in my airplane...

Add no oil into the fuel

"Someone" doesn't know sh1t from canned rhubarb.

I remember hearing of Mogas in Germany when I was in the Army in 1968, what is it?
As fas adding oil to airplane fuel it ain't needed Them motors have no valve seals, are loose as all get out and normally and regulary consume from 1/4 quart to 1 quart of oil per hour or higher at low steady state RPM compared to our street and strip motors My Lycoming O 540 C.I. 260 HP would blow the first quart out in a hour if I ran it one quart low from being full, it would blow the next quart out in two to three hours of steady flying if I ran it down 2 quarts from full. It had a 12 quart system stock, I even treid running it down to 8 quarts cold before starting and that helped a little bit more on reducing the oil consumption, but I figure for the price of one quart of avaition oil I would run it at 9 quarts cold on take off for any long trips

I run a special brew Helicopter AV gas. Its designed for Turbo Prop engines, has no Glycol as helicopters dont get high enough & you only get it from a tanker, heaps of lead & has a 108 rating. engine definately runs smoother on this brew than Ground Tank AV gas.

Boy, please don't advise other people when you don't know what you're talking about. Turbo props are jet engines and burn Jet A which is kerosine. No lead and the octane is around 30 or so. Certified piston helicopters use the same AV gas as airplanes if that is what their type certificate says they have to use, there maybe some with a STC to use car gas.

Don't add anything to it.

Pretty sure you meant to say turbine engine.

Kevin

Turbine engine, jet engine, same thing, one uses thrust, and the other has a gearbox with a prop or rotor.

All I know is that I burned 1.4 hours worth of it this past Saturday and 1.6 hours of 100LL yesterday on Sunday and wish I could burn more today but I can't because it's raining and I have to work. Gawd I love to fly!! I flew N348RM, the maroon one both days and added a quart of oil...to the engine yesterday and not the gas!

Thankxxx guys and after hanging at the airport and getting an inside tour,I think I found a new possible option. Airplane mechanic.........they need em and I`m VERY thorough and love flying the small planes and did when I was about 12 and loved it. I`ll go beat on my car after I finish a dommy and report back.........

This is an interesting thread as there are 3 small air fields within 5 miles of my ranch. My car runs OK on pump93 but I would rather put it away for the winter with the good gas in it
Thanks Dom !
Gus

Send me your carb so I can get it ready for the NEW fuel...........

Know how to make a small fortune in aviation?

Fly airplanes? Plus I bought a second set of headsets for my wife this weekend, my fortune is getting smaller by the day.

Probably the same formula as trucking. Start with a large one.

Kevin

Better yet build a race car LOL

I remember seeing a SS racer with a enclosed trailer back in the mid 1970s with a bumper sticker on the rear door that said "The only way to make a small fortune from drag racing is to start with a large fortune I believe him now Besides what is the price of fun

Somebody is yanking your chain, or you are trying to yank someones. Aircraft fuels boil down to these choices Jet A, Jet A-1, Jet B and Avgas. Since the first 3 are kerosene based for turbine type engines, that means any piston driven engine runs Avgas. And there are no special "brews"

Not sure if it matters that he isn't in the US or not.

sorry, i wrote from my phone & it did some auto correct, i had written turbo piston but it decided to write something else. this gas is not the same as std AV gas & it's brewed in the tanker & only used on select helicopters down here. it looks like AV gas, but the smell is slightly stronger. AV gas has a rating of 100, this is 108 & as stated before, has no glycol. you need to chill a bit dude.

So av gas 100 is 108 octane for the street rating? I get it at my local airport down to 4.00 gallon!

JP 8?? I think that's what my brother called it. He was a crew chief on a CH-47.

We used JP-5 off navy ships for our amtracs' turbo diesel.

Uhmmmm what fairy dust have you been smoking? Turbo props run a blend of Kerosene called Jet fuel, Avgas 100LL is 100 octane, it has a lot of lead in it, enough to get lead fouled plugs....

Mogas is basically unleaded gasoline, same as what is in a car.

Add no oil into the fuel
X2, lowers the octane, will knock at lower temperature and pressure limits.

Thanks for the answer
Are the envoirmentalists still trying to get the lead out of avaition 100 LL fuel?

I was talking with Dick Weinle the owner of Edgewater drag strip here in Cincinnati. He is a pilot and keeps planes down at his drag strip along with avgas. I am going to fly his plane here soon and am going to pay him for avgas.

He tells me that 100LL avgas is rated differently than car race gas and that 100LL is like 112-113 auto race gas? I really have no idea to be honest, but he should know since he tells me he buys it 8000 gallons at a time and he has had it for many years at his drag strip. I believe he sells it to the racers for there race cars.

Anyone ever heard of this difference in octane ratings?

I believe the old avgas formulation was rated at 100 octane lean/130 octane rich. 100LL I think has replaced that, having half the lead of the old 100/130. I don't know if that same octane range still applies to 100LL however 100LL is supposed to be the replacement for the old stuff. In the future as environmental regs tighten further, expect 100LL to go away and be replaced by an unleaded equivalent.

Also I think avgas is rated motor octane only, not the R+M/2 like auto gas.

The three different octane ratings I remember on aviation fuel back in the 1970s where 80/85,100/115 and 130/145. the low octane numbers where for when the motors was run at full rich and the higher number was at max power, maximum EGT readings, not lean and not rich Later on in the mid 1980s the 130/145 got replaced with 115/130 which ended up going away also

I`m going back to "car" gas w/the VP-101 Unleaded since I've been using it since this motor was freshened 5+ years ago................

I have heard the 100LL is rated differently and is higher than 100 octane, but no one could tell me what it actually is.

FWIW...I have an old friend that ran a 468" BBC that was 13:1 w/ 2 stages of nitrous for YEARS on nothing but 100LL w/ no trouble.

thats true.....i used to get a spec sheet and ive never seen it lower that 106.its 100 min usually btw 106-113.when it was a higher batch i would grab more of it

I bought a new mod vp engine from Mercury Marine in the late 80's and 100ll was the recommended fuel. It was a high performance outboard engine.