12-03-2007, 08:54 PM
|
#1
|
Registered User
Join Date: Oct 2007
Location: Ridgecrest CA
Posts: 52
|
Fuel (Gasoline) Question?
I may have access to some 100 octane low lead gasoline (AVGAS) and was thinking of using some in my Boxster S.
Can any tech heads or fuel experts tell me;
Can I use this fuel?
What percentage can I use (i.e. adding X gal of 100 octane to Y gal of 95 or 91 octane each tank?
Thanks
-Scott
__________________
'02 Artic Silver Boxster S
"They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them
Lest we forget"
|
|
|
12-03-2007, 09:25 PM
|
#2
|
Track rat
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
|
100 octane "Streetblaze" Unleaded is A-OK. Unleaded 100 aviation fuel is A-OK. Low Lead aviation fuel will kill your cats quick and long term use could damage your motor. Not recommended.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
|
|
|
12-04-2007, 04:06 AM
|
#3
|
There Is No Substitute.
Join Date: May 2007
Location: West Coast
Posts: 3,253
|
There won't be a difference between it and regular premium gas. Save yourself some $$ and just use premium.
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
|
|
|
12-04-2007, 06:33 AM
|
#4
|
Porscheectomy
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
|
Quote:
Originally Posted by rick3000
There won't be a difference between it and regular premium gas. Save yourself some $$ and just use premium.
|
+1
Spark, compression and valve timing are set to optimize the combustion kernel initiation of 93 octane fuel. Higher octanes won't gain anything.
|
|
|
12-04-2007, 08:30 AM
|
#5
|
Registered User
Join Date: Oct 2006
Location: MD
Posts: 447
|
Rob Falkner did some testing last year on his Boxster S and found a slight gain running high-octane street-legal (unleaded) fuel in his dyno testing.
It was such a small difference you'll never notice it, though.
|
|
|
12-04-2007, 09:09 AM
|
#6
|
Registered User
Join Date: Aug 2007
Location: Tustin Ca.
Posts: 449
|
Quote:
Originally Posted by ozspearo
I may have access to some 100 octane low lead gasoline (AVGAS) and was thinking of using some in my Boxster S.
Can any tech heads or fuel experts tell me;
Can I use this fuel?
What percentage can I use (i.e. adding X gal of 100 octane to Y gal of 95 or 91 octane each tank?
Thanks
-Scott
|
Unless you have big engine mods or can only get 91 like here in So Cal forget it. Above the manufactures recommendations is worthless in any car, definitely not worth $7+ a gallon.
PK
|
|
|
12-05-2007, 06:59 PM
|
#7
|
Registered User
Join Date: Oct 2007
Location: Ridgecrest CA
Posts: 52
|
Thanks all. I wasn't actually going to pay for the fuel, someone was going to give it to me as it will be left over from a project , but given the comments here I don't think I'll bother. I have access to 95 Octane at a place just out of town at $4.89 a gallon so I normally use that. Think I'll stick with the 95 with the occasional tank of 91.
Cheers,
__________________
'02 Artic Silver Boxster S
"They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them
Lest we forget"
|
|
|
12-06-2007, 05:32 AM
|
#8
|
Porscheectomy
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
|
Quote:
Originally Posted by ozspearo
Thanks all. I wasn't actually going to pay for the fuel, someone was going to give it to me as it will be left over from a project , but given the comments here I don't think I'll bother. I have access to 95 Octane at a place just out of town at $4.89 a gallon so I normally use that. Think I'll stick with the 95 with the occasional tank of 91.
Cheers,
|
Well, if it's free, go for it.
|
|
|
12-06-2007, 06:24 PM
|
#9
|
Registered User
Join Date: Oct 2007
Location: Ridgecrest CA
Posts: 52
|
It's free but......
But a new engine isn't!
Just to reiterate, it's 100 octane low lead fuel, not unleaded. I don't know anything about fuel, so I don't know the difference, but given the other problems I have with the car at the moment (and their cost), and the lack of benefits of using this fuel, I think I'll avoid it.
Thanks again for everyone's replies. Feel free to add more if anyone has extra info.
Cheers,
-Scott
__________________
'02 Artic Silver Boxster S
"They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them
Lest we forget"
|
|
|
12-07-2007, 05:43 AM
|
#10
|
Registered User
Join Date: Dec 2006
Location: Austin, TX
Posts: 939
|
lead, any amount = BAAAAAD.
Do NOT use 'low lead' fuel in your Boxster.
__________________
2001 Boxster - Grey on Grey
1969 911T Targa - 'Stinky'
http://www.zoto.com/frayadjacent/img...f27a-4a399.jpg <---- my car. ^ crap I post.
"The existence of the flamethrower is evidence that someone, somewhere once said 'I want to set those people over there on fire, but I don't want to have to walk over there to do it.'"
|
|
|
12-07-2007, 08:52 AM
|
#11
|
Porscheectomy
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
|
Quote:
Originally Posted by ozspearo
But a new engine isn't!
Just to reiterate, it's 100 octane low lead fuel, not unleaded. I don't know anything about fuel, so I don't know the difference, but given the other problems I have with the car at the moment (and their cost), and the lack of benefits of using this fuel, I think I'll avoid it.
Thanks again for everyone's replies. Feel free to add more if anyone has extra info.
Cheers,
-Scott
|
Sorry, I missed the low lead statement. Definitely a no no.
FYI though, it won't hurt your engine at all, it will just mess up your emissions equipment.
|
|
|
12-07-2007, 08:56 AM
|
#12
|
Registered User
Join Date: Oct 2007
Location: Palm Coast FL
Posts: 256
|
Lead will ruin your cats and will most likely void your emmissions warranty (if you care).
|
|
|
12-07-2007, 06:14 PM
|
#13
|
Registered User
Join Date: Oct 2007
Location: Ridgecrest CA
Posts: 52
|
It's decided.
Thanks all. I'll be staying away from the 'free' fuel. I appreciate everyone's input.
__________________
'02 Artic Silver Boxster S
"They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them
Lest we forget"
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
All times are GMT -8. The time now is 09:41 AM.
| |