Date: Fri, 13 Sep 2002 17:56:23 +0100 From: "Lee Marshall" <leenopsamamenigma-it.com> Subject: Re: 9-5 Wagon?
Out of interest then, what octane does the manual and the little sticker on the fuel filler flap recommend? On all sub-aero's in the UK it says 95 RON but on the Aero (9000) it says 98 RON. It's a bit of a pain actually because there is only one source of 98+ in the UK and that is Shell (they call it Optimax, rated at 98.4), all other providers have down-rated Super Unleaded to 97 RON. Obviously it's not a major problem, but my thoughts are "if they cannot be bothered to provide 98, why should I buy from them?" Have a nice weekend! Lee "John Davies" <johndaviesNOSPAMnopsam.net> wrote in message news:0av3oucuark7bladvtp4jd950401uca9vdnopsamcom... > On Fri, 13 Sep 2002 07:36:14 +0100, "Lee Marshall" > <leenopsamamenigma-it.com> wrote: > > >What octane booster do you use? How much does it boost the octane? > > > >I always use 98 octane super unleaded (as recommended by Saab) or 95 premium > >if I cannot get hold of it. I was recently told by Saab that you shouldn't > >use higher than 98 because it goes beyond the reach of the Trionic ECU. > >Surely if you use an octane booster with 98 octane fuel you are wasting your > >money? > > You are quoting European octane numbers here - in the USA our > "normal" premium gas is rated at 92 or 93 (the average of the Research > and Motor Octane ratings). In the high mountain areas (above 4000 or > 5000 feet) and in all of California, I believe, premium is only 90 or > 91, so an octane booster really does help, especially with the Saab > engine management system, which adapts well to keep power as close to > sea level output as possible. > > Car and Driver Magasine recently did a test on premium vs regular > fuel, and the Saab HOT engine rmeasureably reduced power with lower > octane fuel. This is one car that will respond to an octane boost, > though there are limits, as you mentioned. > > http://www.caranddriver.com/xp/Caranddriver/features/2001/november/200111_fe ature_gasoline.xml?keywords=octane > > QUOTE: > The results were more dramatic with the test cars that require premium > fuel. The turbocharged Saab's sophisticated Trionic engine-control > system dialed the power back 9.8 percent on regular gas, and > performance dropped 10.1 percent at the track. > UNQUOTE > > I think the stuff I used was "Outlaw" - there was a photo of some > grinning stock car racer on the front. It was supposed to boost octane > to 104 (USA measurement). > > It worked well for me. I do not normally use the stuff, since I live > at a very low altitude. > > > John Davies > Monroe WA USA > > 2001 Saab 9-5 Aero Wagon > 2000 Audi A4 quattro 1.8T > 1991 Jeep Cherokee Laredo 4x4 > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.385 / Virus Database: 217 - Release Date: 04/09/2002
 |
 |
 |
 |
 |
