BajaNomad

Gas at San Francisquito?

salttram - 12-21-2010 at 12:21 AM

Not that I would absolutely depend on it, but has anyone bought gas at San Francisquito lately? I know that in the past, they've had av.gas and some regular unleaded in the big tanks near the airstrip.

We'll be passing through and camping west of there next week. Any recent info is greatly appreciated!

capt. mike - 12-21-2010 at 06:57 AM

no avgas for over 30 years.

dtbushpilot - 12-21-2010 at 07:59 AM

We will be riding motorcycles through there on about January 1 and will need to get some. If you or anybody else finds out please post it here, I'd hate to have to push my bike up that rocky hill.....dt

Sorry...I am a bit stupid today

mcfez - 12-21-2010 at 08:48 AM

what is av.gas?

Curt63 - 12-21-2010 at 09:24 AM

Av gas is a higher octane aviation fuel.

Pic from June 2010 of the former Pemex at the airstrip





There are two brothers above the marina with a repair shop, ice and gas. I think they are Memo and Beto. I'm sure someone will correct me.

mcfez - 12-21-2010 at 09:45 AM

Curt63 .....can this be used for cars too?

I am asking this stuff because in June we are heading deep Baja to spend a month or (?) so. The more I know...the better I'll do . Txs

David K - 12-21-2010 at 09:51 AM

There are low octane (80) and high octane (100) types of av gas. It is more a guarantee of quality. In an airplane, if the gas is bad... you just can't 'pull over'! Maybe Capitan Mike can add more details on av gas?

David K - 12-21-2010 at 09:52 AM

Quote:
Originally posted by mcfez
Curt63 .....can this be used for cars too?

I am asking this stuff because in June we are heading deep Baja to spend a month or (?) so. The more I know...the better I'll do . Txs


YES... more than once on our Baja trips have we used Av Gas when auto gas wasn't available... great stuff!

Stickers - 12-21-2010 at 10:14 AM

Quote:
Originally posted by David K
There are low octane (80) and high octane (100) types of av gas. It is more a guarantee of quality. In an airplane, if the gas is bad... you just can't 'pull over'! Maybe Capitan Mike can add more details on av gas?


Aviation fuel in Mexico is 120/130 octane. Any high performance motorcycle will love it, but it's probably more common for airplanes to use car gas when in a remote area of Baja.

Many times I have seen motorcycle groups make special arrangements to have fuel brought into PSF for their arrival. They have a burrito, fill their tanks and in a cloud of dust, disappear.

David K - 12-21-2010 at 10:36 AM

Thanks Stickers!

I was using Galen's book 'Air Baja!' for reference on fuel... it it is a few years old!

TMW - 12-21-2010 at 12:25 PM

I was there in early Nov and they had gas. My friend bought some for his MC.

motoged - 12-21-2010 at 02:00 PM

David,
I have always been able to buy gas at SF...sometimes had to wait 1/2 a day for the pick-up truck with a barrel of gas coming in from Guererro Negro, but I always found gas available at the restaurant.....in a pinch, i have heard that folks in the bay just to the north or the local homes just south of the "resort :biggrin:" will have some.

Have a good ride.

capt. mike - 12-22-2010 at 07:30 AM

AVGAS LOW OCTANE now almost non existent had a rating of 80/87. Great if you can find it and was cheaper, radials love it.
cost of production and distribution has all but killed that market since modern engines have been designed for 100 LL.

now most 100 LL [low lead] is actually a rating of 100/130. the key with octane is to get max perf but not suffer detonation, can be a fine line.

mogas and supplemental type certificates for same [STCs] are a whole 'nuther matter. My airplane and engine do not qualify to use auto gas. i wouldn't want to do it anyway even if i could get the STC.

industry is now working on a no lead 94 octane that will work on the whole fleet, we'll see.
when today's modern opposed 4 and 6 bangers hi-comp engines were developed in the 50s and 60s they were based on a min octane of 94, the lo comp versions of the same engines rated for 80 octane.

8 to 1 vs 10 to 1. made a lot of diff.

all the race boats here in havasu are allowed to pull into the airport gates and fill up with hi octane avgas at $4.10 a gal. Unheard of at most airports.

David K - 12-22-2010 at 07:40 AM

Thanks Mike...

shortcut - 12-22-2010 at 11:44 AM

While prerunning the baja 1000 we got gas at a place about 5 kil from the turn off to el arco. 3 kil east from the turn off towards San Francisquito turn right go 2 kil had gas and food nice place.No ocean veiw.

Curt63 - 12-22-2010 at 11:53 AM

El Baril is just down the coast 20 min. and is a community of maybe 100-300 people.

No Pemex, but someone would have gas for you

av gas for boat?

GrOUper-GAr - 12-22-2010 at 03:39 PM

An outboard mechanic once told me to use the low octane(87) over the high octane(91). Expressing that the high(91) makes the Engine run hotter, which will age it faster.
True?
I don't know. I'm not a Mechanic, so i took his word.
Reading this 'GaS' post got me thinking,
if there's a difference beTween 87 and 91, what would 120-130 do to an outboard?
Has anyone ever used this high octane 120/130 av gas in their outboard?

David K - 12-22-2010 at 03:52 PM

Octane: the higher the number, the lower the flash point... more control over pre-ignition (dieseling)... required for high compression engines.

Low octane gas (remember 'NOVA'?) ignites 'easier' sometimes before the spark plug spark, while the piston is still moving upward. The rattleing/ pinging pre-ignition will wreck the motor in time... as the cheaper gas ignites before the sprk plug does from compression heat build up.

High octane gas is 'harder' to ignite, so it won't before the spark is lit by the plug... allowing for higher compression of the air/fuel mixture in the cylinder...

Higher octane gas doesn't ignite as easy as low octane... that's it. If you vehicle doesn't ping on Regular, then there's no reason to use premium... as long as your timing is correct. If you are pulling a load, and it is summer, your vehicle may ping when it normally doesn't... use premium.

Barry A. - 12-22-2010 at 04:27 PM

An the arguments go on---------

With older engines (mine from the '70's and 80's)------

My long-time outboard motor mechanic here in Redding, CA told me to always use 87 octane in my older 1974 15 hp and 1984 35hp 2-stroke outboards, at least here in CA, because of the additives and lack of lead in the higher oct. gas causes the outboards to over-heat within the ignition chamber, damaging the pistons and rings. He says I can burn 87 without adding any additives.

I have followed his advice and no problems with either engine over the past 20 years, or so. Also, I have always hauled my boat-gas down from the States, never using Mex. gas in my outboards. I am able to haul 42 gals of boat fuel in my special-built roof tanks, which lasts a long time using a 15 hp ourboard.

The gas now available in Baja is much better than the "old days", I understand, but I still think the lower octane is the way to go, according to my mechanic------Me personally??? I don't have a clue.

Barry

motoged - 12-22-2010 at 05:17 PM

And. as any mechanic knows regarding a 4-stroke motor:

Suck, Squeeze, Bang, Blow:lol::lol: