 What octane gas do you run?, Is higher always better ? Or just a waste of $$$ |
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| Michael N |
 Oct 27 2006, 08:19 PM
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Certifiable  Group: Members Posts: 1,430 Joined: 6-June 04 From: San Jose, Ca Member No.: 2,164 Region Association: Northern California  |
I was wondering what most drivers are using in their 914's. 87, 92, 100?
I have heard that in fuel injected cars running with a higher octane gas than they were designed to run at can be a waste of money since they are set up to run on a specific octane and any more is lost. I have a Passat and the manufacture states 92 octane. My truck uses 87 and the dealer said I can do damage by running 92 ( although I have no idea why). Please set me straight on my ignorance. (IMG:style_emoticons/default/sad.gif) |
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| Air_Cooled_Nut |
Oct 29 2006, 04:04 PM
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914 Ronin - 914 owner who lost his 914club.com Group: Members Posts: 1,748 Joined: 19-April 03 From: Beaverton, Oregon Member No.: 584 Region Association: None |
My $0.02...
Gas is LIGHTER than water. Erik, I know you know that by your description, just that you wrote "heavier" by mistake. I don't know about gas tankers, but on my ship, a Spruance-class Destroyer, our engines were gas turbine units (4 @ ~20,000hp each (IMG:style_emoticons/default/piratenanner.gif) ) and they used JP5 (jet fuel, which cars don't use). To balance the ship when fuel was transfered 'tween tanks sea water was used to "fill the gap". Since Combat Systems berthing -- where my rack (bed) was -- was directly on top of the fuel tanks we got to hear the loud transfers every time it happened. Point is, some ships use this method and some don't. For transporting gas I would think they would use methods to reduce polluting the product and filter/clean it as well before land transporting. I run low grade in my 914 since she's stock. My other air-cooled (bigger engine) gets high octane due to higher compression and is jetted accordingly. Because I don't drive her as often the extra cleaning package that comes with the higher octanes give me the warm-n-fuzzies as well. My Jetta -- a daily driver and weekend SCCA'er -- gets high octane as well due to higher compression and as recommended by the after-market chip manufacturer (Techtonics Tuning here in Orey-gun). I don't see the higher octane fuels as a complete waste of money since they contain their cleaning pacakages. And what swood wrote is the chief reason for high octane. |
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Posts in this topic
Michael N What octane gas do you run? Oct 27 2006, 08:19 PM
rjames I always use 91 or better (as suggested on the sil... Oct 27 2006, 08:28 PM So.Cal.914 As high as available otherwise it runs like dodo. Oct 27 2006, 09:25 PM
mikerose QUOTE
Thorshammer Many of you know I work in the motorcycle industry... Oct 28 2006, 01:22 PM rjames QUOTE
Jake Raby Eric, That was an excellent post! Oct 28 2006, 03:27 PM Michael N Thanks for all the input.
I have been running 9... Oct 28 2006, 06:34 PM Jake Raby If its been running fine on 91, leave it as is. Hi... Oct 28 2006, 06:54 PM Michael N Thanks :D
Now off to do some :driving: :drivi... Oct 28 2006, 06:57 PM Crazyhippy If you put higher octane in.. turn up the boost to... Oct 28 2006, 07:06 PM Leo Imperial Erik,
What you posted is interesting. I do not wis... Oct 28 2006, 09:38 PM gfulcher Finding a sunoco with 94 octane ULTRA is like find... Oct 29 2006, 08:12 AM shelby/914 No test results, or reems of data, just that my li... Oct 29 2006, 08:53 AM effutuo101 How often do the tanks get tested? once a year? I ... Oct 29 2006, 03:54 PM swood finally....some much needed validation in my life.... Oct 29 2006, 04:35 PM RickS The owners manual recommends 92. I figured the en... Oct 29 2006, 10:57 PM Travis Neff In my stock injected 2.0 I ran regular (87 in AZ),... Oct 29 2006, 11:01 PM fitsbain Lower octain gas burns hotter and makes more power... Oct 30 2006, 09:38 AM D1A3 I run 87 on my stock 2.0 engine as recoemnded by P... Oct 30 2006, 10:16 AM Demick I think the thing to take away from all of this is... Oct 30 2006, 10:52 AM Jake Raby As I satated above a couple of times every engine ... Oct 30 2006, 12:26 PM Matt Meyer On a NEW engine with computer controlled timing an... Oct 30 2006, 12:54 PM |
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