 What grade gas do you use?, In your teener |
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| Downunderman |
 Jul 12 2007, 02:43 PM
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#21
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Senior Member  Group: Members Posts: 852 Joined: 31-May 03 From: Sydney, Australia Member No.: 766 Region Association: Australia and New Zealand  |
98 RON all the time, but it will run fine on 96. The 98 costs about US$1.20 per litre.
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| BMartin914 |
Jul 13 2007, 08:35 AM
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#22
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||| Group: Members Posts: 1,408 Joined: 30-May 04 From: Oregon Member No.: 2,128 Region Association: Pacific Northwest |
QUOTE(shelby/914 @ Jul 12 2007, 07:05 AM)  My '76 2.0L with FI runs just fine on 85 octane, which is regular at our altitude. It is also what my independent Porsche shop recommended. (IMG:style_emoticons/default/thumb3d.gif) |
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| Gint |
Jul 13 2007, 10:25 AM
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#23
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Mike Ginter Group: Admin Posts: 16,082 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
QUOTE(BMartin914 @ Jul 13 2007, 07:35 AM) QUOTE(shelby/914 @ Jul 12 2007, 07:05 AM) My '76 2.0L with FI runs just fine on 85 octane, which is regular at our altitude. It is also what my independent Porsche shop recommended. (IMG:style_emoticons/default/thumb3d.gif) Same here... anything more is just a waste of cash. |
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| BMXerror |
Jul 13 2007, 12:37 PM
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#24
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
Air cooled engine + hot climate. Premium for me.
Mark D. |
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| JmuRiz |
Jul 13 2007, 03:02 PM
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#25
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914 Guru Group: Members Posts: 5,433 Joined: 30-December 02 From: NoVA Member No.: 50 Region Association: MidAtlantic Region 
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QUOTE(9146986 @ Jul 11 2007, 04:46 PM) The higher the octane the slower the burn. The higher octane, the more additives the fuel has in it, which ends up on the top of your piston and on you cylinder head. The more carbon build up you get means it raises the compression and you get carbon hot spots on the piston or cylinder head which results in pre-ignition, so you run higher octane fuel and the endless cycle continues. Hmm, I've always ran premium, which is 93 octane here on the east-coast. Question now is how do you get all the carbon/additive buildup out of the engine? Should I use some kind of upper engine cleaner or BG44K? Anyone have any suggestions? I'll fill up with 87 next time I need gas, see if it pings (BTW my car is a carb'd 2.0 with mild mods). |
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| akellym |
Jul 13 2007, 05:24 PM
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#26
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Eyes Of The Deep Battle Group: Members Posts: 597 Joined: 25-July 04 From: Annandale, MN Member No.: 2,395 Region Association: Northstar Region |
I've always run 93 or higher. I don't have any carbon bldging up in my motor.
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| Pat Garvey |
Jul 13 2007, 08:46 PM
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#27
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Do I or don't I...........? Group: Members Posts: 5,899 Joined: 24-March 06 From: SE PA, near Philly Member No.: 5,765 Region Association: North East States |
I run 87 octane. No problems - it IS a VW motor after all. When I was in the Army (decades ago) I used to swipe the 5 gallon reserve cans of 65 octane MOGAS from my Jeep & put it in my 65 Beetle. Ran great & free.
Yeah, I know it was "not quite right", but the bastards yanked me out of college! All because I had a 0.8 accum. See "Animal House". I got over it. |
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| highways |
Jul 13 2007, 09:00 PM
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#28
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Senior Member Group: Members Posts: 613 Joined: 18-June 05 From: Los Angeles, CA Member No.: 4,296 |
89 seemed to work, and I think was recommended by the mechanic as well. However I do agree it's all a waste of cash which could be used on sooooo many cool parts.
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| grantsfo |
Jul 13 2007, 11:38 PM
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#29
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Arrrrhhhh! Group: Members Posts: 4,327 Joined: 16-March 03 Member No.: 433 Region Association: None |
QUOTE(Gustl @ Jul 11 2007, 02:05 PM) the sticker says 91 - so I use 91 btw - our gas stations offer 91, 95, 98 and some of them even 100 ... (IMG:style_emoticons/default/wavey.gif) Gustl We have some gas stations in California that offer 100 Octane at about $5.50 USD a gallon. Tracks sell several grades up to 110. I occasionally buy 5 gallon cans of 110 leaded race gas at a local speed shop for about $9.00 USD a gallon. |
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| PeeGreen 914 |
Jul 13 2007, 11:43 PM
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#30
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Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest
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Wow, trick racing 110 up here is only 6.25 a gallon. At the track there is Sonoco and others you can buy, but they sell trick near my house.
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| orthobiz |
Jul 15 2007, 08:06 AM
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#31
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Senior Member Group: Members Posts: 1,754 Joined: 8-January 07 From: Cadillac, Michigan Member No.: 7,438 Region Association: Upper MidWest
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QUOTE(Pat Garvey @ Jul 13 2007, 10:46 PM) When I was in the Army (decades ago) I used to swipe the 5 gallon reserve cans of 65 octane MOGAS from my Jeep & put it in my 65 Beetle. Ran great & free. Yeah, I know it was "not quite right", but the bastards yanked me out of college! Umm, doesn't this belong in the "tell us your sins" thread? Paul |
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| JPB |
Jul 15 2007, 04:38 PM
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#32
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The Crimson Rocket smiles in your general direction. Group: Members Posts: 2,927 Joined: 12-November 05 From: Tapmahamock, Va. Member No.: 5,107 |
I run 93 since this is the high grade fuel here. I will go down as the engine can handle it. If you can put lead aditives in your fuel do it; specially on new engines. Use the grade that dosen't make your engine ping when all is tunes up. A little Marvelous Mystery Oil dosen't hurt either in your fuel to get rid of carbon deposits. (IMG:style_emoticons/default/beer.gif)
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| mikelsr |
Jul 15 2007, 07:13 PM
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#33
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Senior Member Group: Members Posts: 657 Joined: 2-January 05 From: Mahomet, IL Member No.: 3,390 Region Association: Southwest Region |
I run 93 in my modified 2.7L/6
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| BahnBrenner914 |
Jul 16 2007, 01:19 PM
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#34
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The girl is gone and all I have now is a beat-up teener Group: Members Posts: 301 Joined: 22-May 04 From: Gig Harbor and University Place, WA :: School in Angola, IN :: girlfriend in Sarasota, FL Member No.: 2,094 Region Association: None |
Seems to me that guys with stock teeners run the regular more and guys with built engines (ie higher compression) run premium. Does that sound like a reasonable statement?
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| JPB |
Jul 16 2007, 06:55 PM
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#35
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The Crimson Rocket smiles in your general direction. Group: Members Posts: 2,927 Joined: 12-November 05 From: Tapmahamock, Va. Member No.: 5,107 |
Yes you are correct brother except for me. I run premium to mix with all the oil it burns (IMG:style_emoticons/default/beer.gif)
Actually it is due to compresion ratio. When one gets to or passed 9:1, higher octanes are needed to keep air/fuel mixture from combusting ahead of timing as in pinging or preigniting. |
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| brant |
Jul 16 2007, 10:47 PM
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#36
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914 Wizard Group: Members Posts: 11,632 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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QUOTE(shelby/914 @ Jul 12 2007, 08:05 AM) My '76 2.0L with FI runs just fine on 85 octane, which is regular at our altitude. It is also what my independent Porsche shop recommended. Dan, you can get away with less octane at altitude. (and on cool days) brant |
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| Lavanaut |
Jul 17 2007, 02:45 PM
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#37
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Hungry Mind : Thirsty Gullet Group: Members Posts: 916 Joined: 20-June 06 From: Bend, OR Member No.: 6,265 Region Association: Pacific Northwest |
Having only ever owned modern cars before I bought my teener last year, I've been feeding it premium. The car seems to run great, but apparently I've been suffering from a common minconception, that premium fuel is better/cleaner/whatever than regular. Maybe it'll run even better on regular! I love this site, I'm always learning stuff.
That said, I want to try out some 87. A lot of people have said something along the lines of "as low as you can go w/o engine knock". So what exactly to I listen/feel for? Engine knock is not something I've ever experienced, at least not as far as I know. Because I understand it's a consideration, I'm driving a stock '74 2.0 @ 3500 feet. And please, be gentle...like I said, I'm learning. (IMG:style_emoticons/default/smile.gif) Thanks |
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| PeeGreen 914 |
Jul 17 2007, 11:57 PM
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#38
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Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest
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You should be fine running reg. Just make sure you are not going to stations that have chitty gas. I swear by Chevron, but shell and 76 are good. I have had to drain a few customers cars who said they only fill up at Safeway and other club stations. The detugents are what is really not good for these old cars. That is why I run 110 leaded in my six. So, go to Chevron and fill with reg and see how it goes. If it knocks it will sound like a pinging noise. It shouldn't though.
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| krazykonrad |
Jul 18 2007, 11:34 AM
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#39
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Senior Member Group: Members Posts: 1,127 Joined: 21-February 06 From: Canton, GA Member No.: 5,610 |
I used mid grade until I realized that mine ran as well on regular Chevron as anything else. I've got a 4 cyl 2.3.
BTW: Porsche recommends the Techron as a FI injector cleaner. |
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| Mark Henry |
Aug 18 2012, 06:00 PM
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#40
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
87 in the DD's, 91 Shell in everything else (including ATV, lawn tractor, weed eater, etc) because it has no methanol in it up here.
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