Go Back   Club Lexus Forums > Lexus Model Forums > IS Models > IS - Second Generation
Sign in using an external account
Register Forgot Password?

Could an IS350 handle 100LL AvGas?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 07-14-13, 05:05 PM   #1
GaaraOTS
Driver School Candidate
Trader Score: (0)
 
GaaraOTS's Avatar
 
Join Date: Jul 2013
Location: Chaos
Posts: 36
Talking Could an IS350 handle 100LL AvGas?

see title.
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
GaaraOTS is offline   Reply With Quote
Old 07-14-13, 05:09 PM   #2
bob4256
Lexus Champion
Trader Score: (17)
 
bob4256's Avatar
 
Join Date: Sep 2010
Location: Weston, FL
Posts: 4,905
bob4256
Default

Did a quick google search.....is that airplane fuel??
__________________
Instagram: bob4256

My Build Thread
bob4256 is offline   Reply With Quote
Old 07-14-13, 05:38 PM   #3
magnuscat
Rookie
Trader Score: (0)
 
Join Date: Jun 2013
Location: NOVA
Posts: 51
Default

Quote:
Originally Posted by bob4256 View Post
Did a quick google search.....is that airplane fuel??
Yes, it is. Used in recip engined aircraft.

I wouldn't use 100LL, especially in a high compression, direct injection engine. Pressures and heat are already considerable in those. 100LL runs pretty hot. Aircraft engines are typically low compression. When I was a pilot and was constantly around airports I used to fill up my bikes and old mustangs with 100LL. One of my bikes designed to be run on leaded gas would have a small gasket leak anytime I used unleaded. When it had avgas in it, it wouldn't have the leak at all. Just as engines that were designed to use leaded gas started having problems with unleaded fuels, mainly valve seating problems, the engines designed to have unleaded fuel could have problems using low lead.

They now have to design engines not only to run on unleaded gas, but it is absolute crap. Ethanol mixtures determined by regional and state laws has only made gas worse over the years. Ethanol is a horrible product which turns foamy and nasty in a car. Left in a tank it will accumulate water and ruin old metal tanks. It gunks injectors and decreases fuel efficiency. feel good naer- do- wells think they are doing good for the environment, but in reality the offset of decreased efficiency thus increase in fuel consumption only increases pollutants in the end. End of rant.

Last edited by magnuscat; 07-14-13 at 06:26 PM..
magnuscat is offline   Reply With Quote
Old 07-14-13, 06:06 PM   #4
genaos11
Pole Position
Trader Score: (13)
 
Join Date: Nov 2011
Location: FL
Posts: 342
Default

U should try it .....let us knw what happen
genaos11 is offline   Reply With Quote
Old 07-14-13, 06:26 PM   #5
GaaraOTS
Driver School Candidate
Trader Score: (0)
 
GaaraOTS's Avatar
 
Join Date: Jul 2013
Location: Chaos
Posts: 36
Default

Quote:
Originally Posted by genaos11 View Post
U should try it .....let us knw what happen
Not with my car... you first :P
GaaraOTS is offline   Reply With Quote
Old 07-14-13, 06:28 PM   #6
GaaraOTS
Driver School Candidate
Trader Score: (0)
 
GaaraOTS's Avatar
 
Join Date: Jul 2013
Location: Chaos
Posts: 36
Default

Well I'm just curious, I know some people run 100 octane UL racing fuel and was wondering if it would have problems with leaded fuel or not. I run 100LL in my 1960 Chrysler Windsor because it was made for leaded, but I wouldn't try it in a UL engine without doing some research first.
GaaraOTS is offline   Reply With Quote
Old 07-14-13, 08:03 PM   #7
GaaraOTS
Driver School Candidate
Trader Score: (0)
 
GaaraOTS's Avatar
 
Join Date: Jul 2013
Location: Chaos
Posts: 36
Default

This is a useful thread:

http://www.ffcars.com/forums/17-fact...cing-fuel.html
GaaraOTS is offline   Reply With Quote
Old 07-14-13, 08:18 PM   #8
magnuscat
Rookie
Trader Score: (0)
 
Join Date: Jun 2013
Location: NOVA
Posts: 51
Default

Quote:
Originally Posted by GaaraOTS View Post
That seems to sum it up nicely. 100 unleaded would be a waste and 100LL would not only be a waste, but it would cause additional fouling especially in a high compression direct injection engine most especially when they already have carbon issues.

As a side note those of us who ran the old 60's muscle cars designed for leaded fuel after they made the switch used to use a product called marvel mystery oil. I have no idea if it is still made, but I would imagine it is. We mixed a cap of it into each gallon pumped and it would lubricate the valves and keep from having the seating problem. I used it in my old cars, old BMW and Harley bikes. You couldn't keep a harley from leaking oil, but at east you could keep the valves from sticking or leaking.
magnuscat is offline   Reply With Quote
Old 07-15-13, 01:57 PM   #9
Gville350
Lexus Fanatic
Trader Score: (8)
 
Gville350's Avatar
 
Join Date: Mar 2011
Location: South Carolina
Posts: 6,429
Default

Definitely not on a 2IS,
__________________
'06 IS350 - 8.6468 @ 81.81MPH
Mods - SRI, BCRs, full GFX kit
Gville350 is offline   Reply With Quote
Old 07-17-13, 10:23 PM   #10
Mythotical
Pole Position
Trader Score: (0)
 
Join Date: Jul 2013
Location: Montana
Posts: 204
Default Don't do it!

OH GOD NO!!! It may say low lead but let me tell you it has about 5 times the lead car gas used to have. in short it will kill your car even if you only use a little bit.
Mythotical is offline   Reply With Quote
Old 07-18-13, 07:42 PM   #11
SCWB
Lexus Test Driver
Trader Score: (0)
 
Join Date: Aug 2010
Location: BKK
Posts: 810
Default

Your oxygen sensor and your catalytic conververtor will go bad quickly with Leaded fuel.
SCWB is offline   Reply With Quote
Old 07-19-13, 12:05 AM   #12
Mythotical
Pole Position
Trader Score: (0)
 
Join Date: Jul 2013
Location: Montana
Posts: 204
Default

I happen to work around that stuff as I am a G.S.E. mechanic. The line service guys keep putting sump fuel 100LL in the tugs and other gas powered equipment ant it fowls the plugs really badly in short time. This one kid put about 2 gallons into a nearly full tank in his 91 Toyota pickup and plugged the cat in less than a day. Bad stuff for cats...
Mythotical is offline   Reply With Quote
Old 07-19-13, 10:03 PM   #13
GaaraOTS
Driver School Candidate
Trader Score: (0)
 
GaaraOTS's Avatar
 
Join Date: Jul 2013
Location: Chaos
Posts: 36
Default

Quote:
Originally Posted by Mythotical View Post
I happen to work around that stuff as I am a G.S.E. mechanic. The line service guys keep putting sump fuel 100LL in the tugs and other gas powered equipment ant it fowls the plugs really badly in short time. This one kid put about 2 gallons into a nearly full tank in his 91 Toyota pickup and plugged the cat in less than a day. Bad stuff for cats...
This. This is good input.
GaaraOTS is offline   Reply With Quote
Old 07-19-13, 10:03 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
CA Coilovers SEXC SC400 / 300 Classifieds 5 03-21-13 03:54 PM
..................... 3jz SC 400/300 1 03-17-13 06:40 PM
CA WTB: Aftermarket Items infate 2Gen IS250 / IS350 / IS-F Classifieds (06-13) 46 01-19-13 07:31 PM
Flowers anyone? bnlexus Digital Photography 0 01-03-13 08:21 AM
Wrong forum dre484 IS - Second Generation 2 09-07-12 06:34 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 06:37 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info